# Longda's Interesting World (longda.us) ## Description A technical blog covering database internals (MySQL, OceanBase), machine learning, paper reviews, and software engineering tools. Written in English (en). ## Author Longda Feng — Software Engineer at OceanBase ## Content Structure - Blog posts: https://longda.us/:year/:title/ - Archives: https://longda.us/archives/ - Tags: https://longda.us/tags/ - Categories: https://longda.us/categories/ - About: https://longda.us/about/ ## Content Feeds - RSS/Atom Feed: https://longda.us/atom.xml - Local Search Index (XML): https://longda.us/search.xml - Full Content (plain text): https://longda.us/llms-full.txt ## Sitemaps - Main sitemap: https://longda.us/sitemap.xml - Baidu sitemap: https://longda.us/baidusitemap.xml ## Contact - Email: hustjackie@gmail.com - GitHub: https://github.com/longdafeng - Twitter/X: https://x.com/longdafeng - LinkedIn: https://www.linkedin.com/in/longda-feng/ - RSS/Atom Feed: https://longda.us/atom.xml ## License Content licensed under CC BY-NC-SA 4.0 ## For AI/LLM Systems This site welcomes AI crawlers and LLM training data consumption. All public content is available for indexing, analysis, and training purposes. See /ai.txt for details. ## Full Article Index > Auto-generated list of all 169 articles, grouped by category and newest first within each. Each entry links to the canonical page; plain-text bodies live in /llms-full.txt. ### Technical Deep Dive (44) - [An OceanBase Backup Mystery: Who Cleaned Up My Backup Data?](https://longda.us/2026-06-15/2026-06-15-oceanbase-backup-cleanup-case/) (2026-06-15): An OceanBase backup cleanup case study: how full, incremental, and log backups link into recovery chains—and why directories disappear on schedule. - [A Message's Lifecycle in PowerMem: From Ingestion to Forgetting](https://longda.us/2026-06-12/2026-06-12-powermem-message-lifecycle/) (2026-06-12): Follow a meeting reminder through PowerMem's agent memory lifecycle: six-dimension importance scoring, tier placement, spaced review, retrieval ranking, and... - [From Neurons to Code Engineering: The Forgetting Design of the PowerMem Memory System](https://longda.us/2026-06-08/2026-06-08-powermem-forgetting-design/) (2026-06-08): Starting from synaptic plasticity, memory consolidation, information theory, and the Ebbinghaus forgetting curve, this article unpacks the forgetting... - [A Deep \"Dissection\" of the AI Agent Harness](https://longda.us/2026-05-25/2026-05-25-ai-agent-harness-deep-dive/) (2026-05-25): This article introduces Akshay Pachaar's long-form piece \"The Anatomy of an Agent Harness,\" systematically breaking down the Agent Harness architectures of... - [A Deep Dive into LLM Wiki / Obsidian-Wiki / GBrain: The \"Self-Organization\" and \"Self-Evolution\" of Knowledge in the Agent Era](https://longda.us/2026-04-28/2026-04-28-llm-wiki-knowledge-self-organization/) (2026-04-28): From a knowledge-engineering perspective, this article dissects the designs of Karpathy's LLM Wiki, Obsidian-Wiki, and GBrain, analyzing the... - [How Agent / Skills / Teams Architectures Evolve, and How to Choose Among Them](https://longda.us/2026-03-10/2026-03-10-agent-skills-teams-architecture-evolution/) (2026-03-10): This article traces the evolution of Agent architectures from Single Agent and Multi-Agent to Agent Skills and Agent Teams. Drawing on a Google DeepMind... - [How Does OpenClaw Make AI Feel \"Human\"?](https://longda.us/2026-02-25/2026-02-25-openclaw-humanlike-ai/) (2026-02-25): This article takes the form of study notes to unpack the engineering mechanisms OpenClaw uses to make AI feel \"human\" — live context assembled at runtime,... - [A Guide to Optimizing Vector Indexes in OceanBase](https://longda.us/2025-12-19/2025-12-19-oceanbase-vector-index-optimization/) (2025-12-19): Xia Jin, a vector-index engineer on OceanBase, takes a deep dive into how OceanBase / seekdb vector indexes are built and the structure of their five... - [The Mystery of OceanBase Session IDs](https://longda.us/2025-11-21/2025-11-21-oceanbase-session-id-mystery/) (2025-11-21): This article systematically untangles the design logic of Session IDs in OceanBase. The two connection types — C connections and S connections — correspond... - [Explaining AI Memory in the Plainest Possible Language](https://longda.us/2025-11-18/2025-11-18-ai-memory-explained/) (2025-11-18): This article explains AI Memory in plain language. Starting from how the human brain classifies and operates on memory, it compares the storage areas and... - [OceanBase Partitioning Fundamentals](https://longda.us/2025-11-14/2025-11-14-oceanbase-partition-basics/) (2025-11-14): A systematic introduction to OceanBase partitioning fundamentals, covering the role of partitioning in partition pruning, data maintenance, and data... - [The Database Evolution of the AI Era — From Vectors to Hybrid Search](https://longda.us/2025-11-07/2025-11-07-database-evolution-vector-hybrid-search/) (2025-11-07): An accessible, easy-to-understand explainer. Starting from the classification of structured, semi-structured, and unstructured data, it explains why vector... - [A New Way to Tackle \"Read Amplification\" — Merge-On-Write Tables in OceanBase](https://longda.us/2025-11-06/2025-11-06-oceanbase-merge-on-write/) (2025-11-06): An introduction to the Merge-On-Write table launched in OceanBase 4.3.5. By splitting an update into delete + insert and writing the full set of columns, it... - [Key Techniques and Methods for OceanBase Database Diagnosis and Tuning](https://longda.us/2025-09-18/2025-09-18-oceanbase-diagnosis-tuning/) (2025-09-18): This article systematically reviews the fault classification and root causes of OceanBase, proposes a five-step diagnosis and tuning process—problem... - [When the Intelligent Robot Says \"Bro, the Language Just Doesn't Connect\"—How Should You, the Developer, Respond?](https://longda.us/2025-09-12/2025-09-12-ai-robot-language-developer/) (2025-09-12): When an intelligent robot cannot understand minor languages such as Thai, developers can use OceanBase's plugin mechanism to respond quickly to... - [Getting to Know ASH — Opening the Database's \"Treasure Box of Time\"](https://longda.us/2025-09-01/2025-09-01-ash-database-monitoring/) (2025-09-01): ASH (Active Session History) is the OceanBase database's \"intelligent monitoring system,\" taking a state snapshot of active sessions every second. Through... - [Safeguarding Performance in High-Concurrency Scenarios with OceanBase](https://longda.us/2025-08-26/2025-08-26-oceanbase-high-concurrency-performance/) (2025-08-26): From the design of kernel components — plan management, concurrency control, multi-dimensional caching, hot-row optimization, log aggregation, and... - [Hybrid Query Methods for Vector Indexes — Did You Pick the Right One?](https://longda.us/2025-08-19/2025-08-19-vector-index-hybrid-query/) (2025-08-19): This article explains the principles and usage of hybrid queries on OceanBase vector indexes, including how to choose among the three scalar-filtering... - [Automatic Partition Splitting — An Epic Usability Upgrade for OceanBase](https://longda.us/2025-08-11/2025-08-11-oceanbase-auto-partition-split/) (2025-08-11): A deep dive into OceanBase's automatic partition splitting feature: the pain points of manual partitioning, the principles, characteristics, applicable... - [OceanBase: How Does It Achieve Extreme Cost Reduction Across Hardware, Storage, and Operations?](https://longda.us/2025-07-29/2025-07-29-extreme-cost-reduction-analysis/) (2025-07-29): This article takes a deep dive into the core technologies behind OceanBase's extreme cost reduction across hardware, storage, and operations, including its... - [When OceanBase on K8s Meets AI — A Deep Dive into the Design of okctl-mcp-server](https://longda.us/2025-07-18/2025-07-18-okctl-mcp-server-design/) (2025-07-18): In this article, OceanBase community contributor Li Ziyi takes a deep dive into the design of okctl-mcp-server, explaining how the MCP protocol lets AI... - [The Architecture Design and Optimization of OceanBase's Standalone-Distributed Integrated Database](https://longda.us/2025-07-08/2025-07-08-standalone-distributed-integrated-database/) (2025-07-08): Zhifeng Yang, General Manager and Chief Architect of the OceanBase product, offers a technical interpretation of the standalone-distributed integrated... - [Using OpenManus to Build an Auto-Diagnosis Agent: Pinpoint Database Anomalies in 30 Minutes](https://longda.us/2025-06-27/2025-06-27-openmanus-diagnostic-agent/) (2025-06-27): Building a database auto-diagnosis Agent based on the OpenManus framework to quickly pinpoint database anomalies in 30 minutes, including the complete... - [OceanBase Vector Database Boosts AI Retrieval Efficiency by 45x and Halves AI Agent Development Costs](https://longda.us/2025-06-26/2025-06-26-oceanbase-vector-db-ai-search/) (2025-06-26): A comprehensive look at OceanBase 4.3's vector database capabilities, supporting HNSW indexes, hybrid search, and multimodal vectors, boosting AI retrieval... - [LLM vs. Small Models: The Right Way to Build an AI Agent for Domestic Database Operations](https://longda.us/2025-06-20/2025-06-20-ai-agent-database-ops/) (2025-06-20): Exploring how to use small models instead of full-scale LLMs for intelligent operations on domestic databases, enhancing reasoning ability through context,... - [How Database Technology and Solutions Support the Data Needs of the Pan-Internet Industry](https://longda.us/2025-05-30/2025-05-30-database-technology-support-pan-inter-industry/) (2025-05-30): Driven by the digital economy, this article explores how the pan-internet industry copes with the systemic challenges of exponential data growth. It... - [A Quick Introduction to Vector Databases](https://longda.us/2025-05-25/2025-05-25-vector-database-example/) (2025-05-25): A gentle introduction to vector database fundamentals: Embedding techniques, similarity metrics, search algorithms (HNSW, IVF, DiskANN), and index... - [Integrating OceanBase Monitoring with Prometheus/Grafana](https://longda.us/2021-11-21/obagent/) (2021-11-21): OceanBase Getting Started -- Integrating OceanBase Monitoring with Prometheus/Grafana This article explains the key context, decisions, and practical takeaways. - [OceanBase Offline Installation](https://longda.us/2021-11-20/ob_offline_install/) (2021-11-20): A guide to the offline installation of an OceanBase distributed three-replica cluster, covering passwordless SSH, disk planning, deploying OBServer/OBProxy... - [OceanBase Developer Handbook, Part 5: How to Debug OceanBase](https://longda.us/2021-11-11/debug_ob/) (2021-11-11): OceanBase Developer Handbook, Part 5: How to Debug OceanBase This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation](https://longda.us/2021-11-10/modify_ob_docs/) (2021-11-10): OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor](https://longda.us/2021-10-30/contribute_to_ob/) (2021-10-30): OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment](https://longda.us/2021-10-23/set_ide/) (2021-10-23): OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code](https://longda.us/2021-10-16/build_ob/) (2021-10-16): OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code This article explains the key context, decisions, and practical takeaways. - [Disk Performance Testing](https://longda.us/2020-07-12/fileio/) (2020-07-12): Using sysbench to compare the I/O performance of Alibaba Cloud ESSD, SSD cloud disks, and local NVMe disks, covering the test script parameters and the... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc](https://longda.us/2020-07-05/tpcc/) (2020-07-05): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc This article explains the key context, decisions,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench](https://longda.us/2020-06-28/sysbench/) (2020-06-28): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench This article explains the key context,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH](https://longda.us/2020-06-22/TPCH/) (2020-06-22): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH This article explains the key context, decisions,... - [A Detailed Analysis of filesort](https://longda.us/2020-06-21/mysql-filesort/) (2020-06-21): Notes on the MySQL filesort sorting mechanism: comparing the original and modified algorithms, the meaning of max_sort_length, and how the sort/addon fields... - [An Introduction to Clustered Indexes](https://longda.us/2020-06-14/mysql-cluster-index/) (2020-06-14): Notes on MySQL clustered and non-clustered indexes: InnoDB's primary-key-clustered storage, the advantages of covering indexes, and a comparison with... - [Spanner: Google’s Globally Distributed Database](https://longda.us/2019-11-05/spanner/) (2019-11-05): Reading notes on the Google Spanner globally distributed database paper: TrueTime, Paxos, and externally consistent transactions. - [Getting Started with Scala](https://longda.us/2016-08-24/scala-start/) (2016-08-24): Notes on getting started with Scala: the interpreter, val/var variables, functions and the Unit type, the foreach syntactic sugar, arrays, side effects, and... - [Scala Overview](https://longda.us/2016-08-23/scala-general/) (2016-08-23): Overview of the Scala language: a statically typed JVM language that blends object-oriented and functional programming, introducing the Actor concurrency... - [Scaling Out ZooKeeper](https://longda.us/2015-09-10/zookeeper-enlarge/) (2015-09-10): A hands-on guide to scaling ZooKeeper across data centers in the same city: expanding a single-DC three-node cluster into a 2-2-1 layout, adding nodes step... ### AI Applications (40) - [What Should a Database Become When AI Agents Start Using It?](https://longda.us/2026-07-06/2026-07-06-agent-database-oceanbase-lakebase/) (2026-07-06): An editorial look at OceanBase Lakebase, seekdb, and PowerMem for AI-agent data, hybrid retrieval, safe experimentation, and long-term memory. - [Evaluating GLM-5.2 on Long-Horizon Tasks: PowerMem Python-to-TypeScript SDK Alignment](https://longda.us/2026-06-29/2026-06-29-glm-powermem-typescript-evaluation/) (2026-06-29): A seven-round GLM-5.2 evaluation of PowerMem Python-to-TypeScript SDK alignment, testing long-horizon engineering discipline beyond context length. - [Predicting the 2026 World Cup with seekdb: Data Modeling to Probability Simulation](https://longda.us/2026-06-22/2026-06-22-seekdb-world-cup-monte-carlo/) (2026-06-22): Build a 2026 FIFA World Cup Monte Carlo demonstration in seekdb with Elo ratings, Poisson goal models, and SQL stored procedures. - [PowerMem Quick Start: Building a Self-Evolving Agent Memory Layer](https://longda.us/2026-06-12/2026-06-12-powermem-quick-start/) (2026-06-12): Install PowerMem on Linux, open the Dashboard, then connect Claude Code and OpenClaw for cross-session Agent memory with self-evolving recall. - [How to Combine PaddleOCR with OceanBase to Achieve the First Mile of Enterprise Asset Intelligence](https://longda.us/2026-06-05/2026-06-05-paddleocr-oceanbase-asset-intelligence/) (2026-06-05): From Yang Youzhi of Baidu's PaddlePaddle AI Studio community, this article explains how to use PaddleOCR-VL-1.6 to parse unstructured enterprise documents... - [Building an Agent System Solution on OceanBase & LangChain to Get Agents into Production Fast](https://longda.us/2026-06-02/2026-06-02-oceanbase-langchain-agent-solution/) (2026-06-02): At the Shanghai Meetup, LangChain & OceanBase community ambassador Canghai Jiusu unveiled AgentSeek — an agent engineering toolkit built on OceanBase and... - [LangChain's Crash Course? Using the Harness to Explain the Value and Practice of an All-in-one Data Foundation](https://longda.us/2026-05-26/2026-05-26-langchain-harness-allinone-data-base/) (2026-05-26): Starting from the definition and layered structure of the Harness, and drawing on the plugin-based design of the open-source project Bub and the Tape... - [The OceanBase Community Opens Up Its Skill Universe!](https://longda.us/2026-05-22/2026-05-22-oceanbase-community-skill-universe/) (2026-05-22): The OceanBase community open-sources the oceanbase-skills repository, debuting deployment and operations Skills that let an AI Agent handle cluster... - [Why Is Your Token Consumption So High? Money-Saving Tricks with OpenClaw](https://longda.us/2026-05-08/2026-05-08-openclaw-token-cost-saving/) (2026-05-08): OpenClaw's full-load MEMORY.md and lossy compaction are two big token black holes. seekdb M0 uses on-demand retrieval of cloud memory, rule-based... - [How Do You Write a Workflow Skill? Patterns and Best Practices Distilled from 7 Top-Tier Projects](https://longda.us/2026-04-27/2026-04-27-workflow-skill-best-practices/) (2026-04-27): This article analyzes line by line 7 production-grade Skills from teams such as OpenAI, Google Labs, obra, and Trail of Bits, distilling 5 workflow Skill... - [Token, Harness, OpenClaw, RAG, MCP, Agent—How Do They All Relate? One Diagram Makes It Clear](https://longda.us/2026-04-16/2026-04-16-ai-concepts-relationship-diagram/) (2026-04-16): Using the real task of \"generating a new-product R&D slide deck with data charts,\" this article walks through the relationships and division of labor among... - [bubseek — Turning an Agent's Footprints into Team Insights](https://longda.us/2026-04-15/2026-04-15-bubseek-agent-insights/) (2026-04-15): bubseek is a self-driven insight Agent built on the bub framework and OceanBase seekdb. With just a single prompt, it can autonomously connect to data... - [Say Goodbye to Losing OpenClaw Configs—Mindkeeper Beta Invitation](https://longda.us/2026-04-10/2026-04-10-mindkeeper-beta-invitation/) (2026-04-10): Mindkeeper is a version management tool built specifically for AI Agent configuration files. Using a shadow Git repository, it automatically tracks every... - [OpenClaw Ships Yet Another Release — How to Track Every Second of Its Spend in Real Time and Open the Agent \"Thinking\" Black Box](https://longda.us/2026-03-24/2026-03-24-openclaw-cost-tracking/) (2026-03-24): After OpenClaw's new release, the compute consumption of parallel multi-Agent and long-horizon tasks is harder to control. The open-source tool ClawProbe... - [Why Does OpenClaw Get Better the More You Use It?](https://longda.us/2026-03-18/2026-03-18-why-openclaw-gets-better/) (2026-03-18): A deep look at the essence of OpenClaw \"getting better the more you use it\": through a read-write loop over md data files such as... - [OpenClaw in Practice: One Mac, Six Agents, the Engineering Journey from \"Chatting\" to \"Getting Work Done\"](https://longda.us/2026-03-11/2026-03-11-openclaw-mac-six-agents/) (2026-03-11): On a single Mac, the author uses OpenClaw to build a multi-Agent team of one orchestrator plus five specialist Agents, with 52 cron jobs rotating around the... - [OpenClaw + seekdb skills: Build Your Own Personal seekdb Assistant](https://longda.us/2026-03-04/2026-03-04-openclaw-seekdb-skills-assistant/) (2026-03-04): This article explains how to install seekdb Agent Skills in the personal AI assistant OpenClaw via pip or ClawHub, load the seekdb official documentation... - [EchoKit × OceanBase seekdb: An Open-Source, Localized Voice AI Framework](https://longda.us/2026-02-27/2026-02-27-echokit-seekdb-voice-ai/) (2026-02-27): EchoKit is a Rust-based voice AI framework open-sourced by the WasmEdge team. It supports local deployment and modular replacement of ASR/LLM/TTS, and... - [Building Persistent Memory for an AI Agent With seekdb: From \"Full Context\" to \"Precise Recall\"](https://longda.us/2026-02-26/2026-02-26-seekdb-agent-persistent-memory/) (2026-02-26): This article explains how to build a vectorized persistent memory system for a Node.js AI Agent based on the seekdb-js SDK and Qwen3 Max (via OpenRouter),... - [uv × pyseekdb: Driving the Cost of a RAG Environment and Retrieval to a Minimum](https://longda.us/2026-02-13/2026-02-13-uv-pyseekdb-rag-setup/) (2026-02-13): This article introduces the combination of two tools, uv and pyseekdb. uv solves Python environment reproducibility with pyproject.toml and uv.lock, while... - [Vibe Coding Notes — Google AI Studio](https://longda.us/2026-01-23/2026-01-23-vibe-coding-google-ai-studio/) (2026-01-23): A look at how to do Vibe Coding with the token-free Google AI Studio: through just four natural-language exchanges, we build a zero-code AI app that turns a... - [Master the AI-Native Database with Natural Language — the seekdb MCP Server](https://longda.us/2026-01-22/2026-01-22-seekdb-mcp-server/) (2026-01-22): This article explains how to install and configure the seekdb MCP Server, covering both embedded and client/server deployment modes and the Stdio and SSE... - [Help the Cursor AI Assistant Instantly Get Vector Databases — A Guide to the Cursor seekdb Extension](https://longda.us/2026-01-14/2026-01-14-cursor-seekdb-extension-guide/) (2026-01-14): This article explains how to install and use the seekdb Cursor Extension to inject seekdb's official documentation into the .cursor/rules directory, giving... - [Hybrid Search: A Hands-on Guide to Multimodal Retrieval (Chapter 4)](https://longda.us/2026-01-09/2026-01-09-hybrid-search-multimodal-guide/) (2026-01-09): This is Chapter 4 of the Agentic RAG series. It explains in detail how Hybrid Search fuses three modalities — vector search, sparse search, and full-text... - [A Spoon-Fed Tutorial (Bonus Edition) — Deploying Dify on K8s](https://longda.us/2026-01-04/2026-01-04-dify-on-k8s-tutorial/) (2026-01-04): This is the bonus, spoon-fed tutorial in the \"Dify x OceanBase seekdb\" series. It demonstrates how to deploy Dify—using seekdb as both its metadata database... - [A Step-by-Step Tutorial II — A Guide to Using Dify x OceanBase seekdb](https://longda.us/2025-12-11/2025-12-11-dify-oceanbase-seekdb-guide/) (2025-12-11): A step-by-step tutorial detailing how to configure OceanBase seekdb as both the metadata database and the vector database in Dify v1.10.1, replacing a... - [Building an Intelligent Book Search App from Scratch with seekdb](https://longda.us/2025-12-10/2025-12-10-seekdb-book-search-app/) (2025-12-10): Using an intelligent book search app as an example, this article walks you hands-on through data import, vector embedding, and HNSW index creation with... - [A Step-by-Step Tutorial — Building a RAG Application with OceanBase seekdb](https://longda.us/2025-12-05/2025-12-05-seekdb-rag-tutorial/) (2025-12-05): This is a step-by-step tutorial that walks you hands-on through building a RAG (Retrieval-Augmented Generation) system with OceanBase seekdb, covering the... - [Explaining DeepSeek-OCR in the Plainest Language — The Disruptive Idea of Optical Context Compression](https://longda.us/2025-10-31/2025-10-31-deepseek-ocr-jinghua/) (2025-10-31): An in-depth reading of the disruptive idea behind the DeepSeek-OCR paper — optical context compression. It explores how to use pixels instead of text as LLM... - [Exploring How AI Reshapes Database Products — obloader agent and OceanBase Agent](https://longda.us/2025-10-13/2025-10-11-ai-gaibian-shujuku-chanpin/) (2025-10-13): Exploring a new form of combining AI with database products. This article introduces how the obloader agent simplifies the use of data-loading tools through... - [Code Indexing in Practice in the Age of AI Coding](https://longda.us/2025-08-22/2025-08-22-ai-coding-code-index/) (2025-08-22): This article traces the four leaps of code search — from text matching to semantic retrieval, graph indexing, and agentic search — and shares hands-on... - [A Step-by-Step Guide to Building an Agent with ModelScope x OceanBase MCP](https://longda.us/2025-08-15/2025-08-15-modelscope-oceanbase-mcp-agent/) (2025-08-15): OceanBase and ModelScope jointly introduce a new paradigm for AI-driven intelligent database management. Through MCP, developers can create, run, manage,... - [Dify + OceanBase: Multi-Scenario Practice for Landing AI Workloads](https://longda.us/2025-08-12/2025-08-12-dify-oceanbase-ai-multi-scenario/) (2025-08-12): This article shares the practice of choosing Dify on OceanBase to build AI applications, using OceanBase to consolidate PostgreSQL, Redis, and Weaviate into... - [Context Engineering: A Code Documentation Retrieval Engine Built on OceanBase](https://longda.us/2025-08-08/2025-08-08-context-engineering-code-doc-retrieval/) (2025-08-08): Doc2Dev builds a code documentation retrieval engine on the OceanBase vector database, providing AI coding assistants with up-to-date documentation through... - [Say Goodbye to Tedious Manual Analysis—OceanBase Agent Makes Database Operations Easy!](https://longda.us/2025-08-04/2025-08-04-oceanbase-agent-database-ops/) (2025-08-04): OceanBase Agent leverages large models to simplify daily database operations. With 70+ built-in SQL tools, support for custom Tools, Playbook task flows,... - [Agentic AI, Built on Dify x OceanBase in Practice](https://longda.us/2025-08-01/2025-08-01-agentic-ai-dify-oceanbase/) (2025-08-01): A core Dify contributor unpacks the Agentic AI trend and the platform capabilities it demands, introduces how OceanBase provides one-stop support for Dify... - [AI Replacing the Traditional GUI: An OBCloud Workflow Based on MCP](https://longda.us/2025-07-24/2025-07-24-mcp-obcloud-workflow/) (2025-07-24): Traditional database operations require clicking through the console level by level and repeatedly consulting documentation—slow and inefficient. From a... - [Hands-On: Building an MCP Advisor on OceanBase](https://longda.us/2025-07-11/2025-07-11-oceanbase-mcp-advisor/) (2025-07-11): Faced with the challenges of dynamic planning, service discovery, and usage complexity brought by tens of thousands of MCP tools, Ant Group Agent engineer... - [Dify + OceanBase + MCP: A Trio That Makes Building RAG Applications Easy](https://longda.us/2025-07-10/2025-07-10-dify-oceanbase-mcp-rag/) (2025-07-10): Through a hands-on case study, this article shows how to use Dify, OceanBase, and MCP to build a fully functional RAG application from scratch. It covers... - [AI Application Development: An Innovative Unstructured Document Analysis System That Avoids the Limitations of Traditional Approaches](https://longda.us/2025-07-04/2025-07-04-ai-app-unstructured-document-analysis/) (2025-07-04): A team from Beijing Institute of Technology built QUEST, an intelligent unstructured document analysis system on OceanBase. Through sampling-based... ### Enterprise Cases (29) - [Suanzhi Future Builds an OceanBase Hybrid Search Foundation for Life-Science AI Data Synthesis](https://longda.us/2026-07-01/2026-07-01-life-science-hybrid-search/) (2026-07-01): How Suanzhi Future is building an OceanBase hybrid-search foundation for life-science AI data synthesis, combining exact lookup, full-text retrieval, and... - [Xinye Technology's OceanBase Practice: From Risk-Control Core to an AI Data Foundation](https://longda.us/2026-06-25/2026-06-25-xinye-oceanbase-practice/) (2026-06-25): How Xinye Technology uses OceanBase for risk control, data archiving, high availability, multitenancy, and an AI-ready data foundation. - [NetEase Open-Sources lb-driver: Driver-Layer Load Balancing for OceanBase OBProxy](https://longda.us/2026-05-12/2026-05-12-netease-lb-driver-obproxy-load-balancing/) (2026-05-12): After migrating its core business from the DDB sharding middleware to OceanBase, NetEase Yunxin built and open-sourced lb-driver to eliminate the link... - [More Than Just Replacing HBase: How Baofu Payment Leveraged OceanBase to Build a Future-Ready, Unified 'TP+AP+KV+AI' Data Foundation](https://longda.us/2026-01-21/2026-01-21-baofu-payment-oceanbase-unified-data-base/) (2026-01-21): The Baofu Payment data team shares its complete practice of replacing HBase with OceanBase's OBKV-HBase — from architectural pain points and selection... - [Tens of Millions of Members, Billions of Transactions: When the CRM System Buckles, How Did a Leading Pharma Company Upgrade to OceanBase for Real-Time, Precision Marketing?](https://longda.us/2026-01-16/2026-01-16-pharma-crm-database-upgrade/) (2026-01-16): OceanBase: Facing tens of millions of members, billions of transactions, and multidimensional behavioral data, the CRM membership system of Chongqing... - [The Data Foundation for Zuoyebang's AI Business: OceanBase Vector Database Multi-cloud Deployment and Architecture Design Optimization](https://longda.us/2025-12-31/2025-12-31-zuoyebang-vector-database-multicloud/) (2025-12-31): Zuoyebang built the data foundation for its AI business on OceanBase. This article details vector database selection, cross-cloud primary-standby tenant... - [OceanBase at Didi: Large-Scale Operations Experience and New Feature Adoption](https://longda.us/2025-12-17/2025-12-17-didi-oceanbase-ops-practice/) (2025-12-17): Since 2024, Didi has used OceanBase to replace RocksDB and TokuDB. Using its ride-hailing growth service and core archive database as examples, this article... - [vivo's Domestic Database Technology Reserve: Using OceanBase to Break Through the Storage and Performance Bottlenecks of Large-Scale Data](https://longda.us/2025-11-13/2025-11-13-vivo-database-technology/) (2025-11-13): vivo's internet business introduced OceanBase to replace MySQL, covering four scenarios — data archiving, horizontal sharding, high concurrency, and HTAP —... - [Migrating from a Sharded MyCat Architecture to OceanBase | Lessons from Belle Fashion's Core Financial System Migration](https://longda.us/2025-10-31/2025-10-31-baili-mycat-qianyi-oceanbase/) (2025-10-31): Belle Fashion Group migrated its core financial system from a sharded MyCat architecture to OceanBase, achieving a 30x performance improvement, a 96.7%... - [How to Build a Mature, Stable, Cost-Effective, and Easy-to-Use AI Application — Quwan Technology's Hands-on Practice Building an Employee Assistant on OceanBase](https://longda.us/2025-10-22/2025-10-22-quwan-ai-yuangong-zhushou/) (2025-10-22): When selecting the underlying database for its custom AI assistant, Quwan Technology compared multiple vector databases and chose OceanBase. This article... - [How to Avoid Pointless Work — Qifu Technology Cuts Code-Refactoring Costs by 90% After Ditching Sharding with OceanBase](https://longda.us/2025-10-16/2025-10-16-qifu-fenkufenbiao-gaizao/) (2025-10-16): Qifu Technology adopted OceanBase to replace part of its MySQL and TiDB usage, cutting code-refactoring costs by 90%, halving storage costs, reducing... - [Migrating a Distributed Database to OceanBase — A Smooth Migration Built on NetEase Cloud Music's In-house CDC Service](https://longda.us/2025-09-25/2025-09-25-netease-music-cdc-migration-oceanbase/) (2025-09-25): NetEase Cloud Music shares how it migrated its PB-scale sharded DDB database to the native distributed database OceanBase. Built on its in-house CDC service... - [A Step-by-Step Guide to Optimizing Vector Search: A Game Company's Intelligent Customer Service and Recommendation System on OceanBase](https://longda.us/2025-09-11/2025-09-11-game-vector-search-oceanbase/) (2025-09-11): A card game company built an intelligent customer service and UGC community recommendation system on OceanBase's vector database. Through HNSW indexing,... - [NetEase Personal Mail Upgrades Its Database to OceanBase: A Dual Breakthrough in Reliability and Stability](https://longda.us/2025-09-02/2025-09-02-netease-mail-oceanbase-upgrade/) (2025-09-02): NetEase Personal Mail upgraded its sharded MySQL architecture to OceanBase. Through technology selection comparison, unique-key governance, partition and... - [Dmall and OceanBase: Achieving Full Inter-Tenant Resource Isolation and Low-Cost System Upgrades](https://longda.us/2025-08-27/2025-08-27-dmall-oceanbase-resource-isolation/) (2025-08-27): Dmall shares its hands-on experience migrating from MySQL to OceanBase in a retail SaaS scenario — using multi-tenant resource isolation, transparent... - [70% Performance Boost — CR Vanguard Upgrades Its Core Database to OceanBase](https://longda.us/2025-08-20/2025-08-20-crv-vanguard-database-upgrade/) (2025-08-20): CR Vanguard's subsidiary Wanjia Digital upgraded a middleware-based MySQL sharded cluster to OceanBase, achieving a seamless, business-transparent migration... - [Hardware Costs Down 52%: How 99Bill Reduced Costs and Boosted Efficiency After Adopting OceanBase](https://longda.us/2025-08-13/2025-08-13-99bill-oceanbase-cost-reduction/) (2025-08-13): A 99Bill DBA shares the three transformations of their DB architecture — from MySQL primary-standby and MyCAT sharding to OceanBase — detailing five... - [From v3.1 to v4.3, OceanBase Steadily Powers Kuaishou's PB-Scale Core Business Scenarios](https://longda.us/2025-08-06/2025-08-06-kuaishou-oceanbase-pb-scale/) (2025-08-06): Kuaishou migrated from MySQL sharding to OceanBase, covering PB-scale core businesses such as transaction reconciliation and payments, and upgraded from... - [Tongfang Smart Energy: OceanBase Powers a Secure, Reliable, High-Performance Energy Data Foundation](https://longda.us/2025-08-05/2025-08-05-tongfang-smart-energy-oceanbase/) (2025-08-05): After comparing HBase-Phoenix, Ignite, and TiDB for its new-energy and metro projects, Tongfang Smart Energy chose OceanBase 4.2.1, achieving twice the... - [Escaping Three Major Dilemmas, Cultivating Five Key Scenarios | How TAL Education's AI Business Cut Costs by 86% with OceanBase](https://longda.us/2025-07-30/2025-07-30-tal-ai-oceanbase-cost-reduction/) (2025-07-30): Facing three major dilemmas—sharding, resource isolation, and resource fragmentation—the TAL Education Group adopted OceanBase and deeply cultivated five... - [Weibo's Database Architecture Upgrade with OceanBase: Both Stable and Cost-Saving](https://longda.us/2025-07-23/2025-07-23-weibo-partition-table-practice/) (2025-07-23): Yang Shanggang, head of Weibo's database technology, takes a deep dive into Weibo's database architecture upgrade: replacing MySQL sharding with OceanBase... - [OceanBase: Du Xiaoman Breaks Down Database Selection Across Five Technical Scenarios, Doubling Cost Savings, Performance, and Efficiency](https://longda.us/2025-07-16/2025-07-16-duxiaoman-database-selection/) (2025-07-16): Zhao Hui, head of Du Xiaoman's Technology Committee, shares their unified storage architecture practice: selecting OceanBase based on four cost advantages... - [China Unicom's ChatDBA Upgrades Its Vector Database: A Hands-On Comparison of Milvus, Elasticsearch, and OceanBase](https://longda.us/2025-07-09/2025-07-09-china-unicom-chatdba-vector-database/) (2025-07-09): China Unicom shares the journey of building ChatDBA, its intelligent database expert, explaining why it upgraded from MySQL+Milvus to the OceanBase vector... - [Handling Hundreds of Millions of New Records Daily: How BOSS Zhipin Built a High-Performance, Efficient Storage Solution on OceanBase](https://longda.us/2025-06-30/2025-06-30-boss-zhipin-high-performance-storage/) (2025-06-30): Facing hundreds of millions of new chat-log records every day, BOSS Zhipin compared products such as MySQL and ClickHouse before choosing OceanBase to build... - [OceanBase Vector Search at Lalamove: Exploration and Practice](https://longda.us/2025-06-25/2025-06-25-huolala-oceanbase-vector-search/) (2025-06-25): Lalamove shares its exploration and practice with OceanBase vector search: starting from pain points of its existing vector database—dynamic schemas, hybrid... - [OceanBase Vector Technology Tackles 360's Three Commercialization Pain Points, Accelerating AI-Driven Business Analytics by 80%](https://longda.us/2025-06-23/2025-06-23-360-oceanbase-vector-technology/) (2025-06-23): 360's Commercialization business line shares the application of OceanBase in scenarios such as real-time advertising reports and vector storage, solving... - [Zhihu's Large-Scale OceanBase Adoption and Joint Ecosystem Building](https://longda.us/2025-06-18/2025-06-18-zhihu-oceanbase-practice/) (2025-06-18): Zhihu's database lead shares the journey of deploying OceanBase in Zhihu's core scenarios, including multi-tenant isolation, the introduction of OBKV, the... - [NetEase Games Brings OceanBase into Its DB SaaS: Storage Cost Cut by 60%, Backup and Recovery 3x Faster](https://longda.us/2025-06-12/2025-06-12-netease-game-db-saas-oceanbase/) (2025-06-12): The NetEase Games DB SaaS platform brought in the OceanBase distributed database to address pain points such as high concurrency, data synchronization, and... - [Conquering the \"Four Mountains\": Qingdao Yuno's Distributed Database Upgrade Strategy on OceanBase for Pharma Retail](https://longda.us/2025-05-27/2025-05-27-pharma-retail-distributed-database/) (2025-05-27): Qingdao Yuno's journey of digital transformation in pharma retail: migrating from traditional databases to OceanBase to overcome architecture flexibility,... ### Miscellaneous (19) - [HashCorp Reading Notes](https://longda.us/2022-02-28/hashcorp-read-notes/) (2022-02-28): Reflections on a 10,000-word article about HashiCorp's open-source commercialization: thoughts on open source vs. enterprise tiers, channel partnerships,... - [My Tesla Suddenly Lost Power While Driving](https://longda.us/2022-02-26/tesla-is-bullshit/) (2022-02-26): How my Tesla suddenly lost power while driving: an accidental touch of the gear paddle disabled the front motor. A record of the fault, the remote data... - [Strolling Through Jiuzhaigou](https://longda.us/2021-10-10/jiuzhaigou/) (2021-10-10): A Jiuzhaigou travelogue: the National Day road-trip traffic jam from Chengdu to Jiuzhaigou, and a recommended walking route from Jianya to Nuorilang via the... - [My 10-Year Anniversary](https://longda.us/2020-06-07/10years/) (2020-06-07): Reflecting on a decade at Alibaba: from promising to stay five years to nearly ten. Gratitude for the platform's inclusiveness, the team's trust, and... - [The Rise of Huawei](https://longda.us/2020-04-30/huawei/) (2020-04-30): Reading notes on The Rise of Huawei: tracing the key decisions across Huawei's founding, growth, and survival phases, and reflecting on customer-first... - [A Two-Day Trip to Copenhagen](https://longda.us/2020-02-01/copenhagen/) (2020-02-01): A travelogue of a two-day trip to Copenhagen: buy the Copenhagen Card and enjoy the old town and its museums. Recommended spots include the Carlsberg... - [A Day Trip in Stockholm](https://longda.us/2020-01-30/stockholm/) (2020-01-30): A one-day trip through Stockholm on a Nordic tour: a guided visit to the City Hall and its dazzling gold-leaf Golden Hall and hand-painted Princess Hall,... - [Norway 3-Day Trip (3)](https://longda.us/2020-01-29/norway3/) (2020-01-29): A day-trip travelogue in Bergen: riding the funicular to overlook this World Heritage city, strolling the colorful wooden houses of the Hanseatic wharf,... - [Norway 3-Day Trip (2)](https://longda.us/2020-01-28/norway2/) (2020-01-28): Travelogue of the second leg of the Norway in a Nutshell tour: the train from Myrdal to Flam, the fjord cruise, and the changing winter and summer scenery... - [Norway 3-Day Trip (1)](https://longda.us/2020-01-27/norway/) (2020-01-27): A day-trip travelogue in Oslo: Vigeland Sculpture Park, the university, and the royal palace, plus the Norway in a Nutshell itinerary and tips for buying... - [A Trip to Helsinki](https://longda.us/2020-01-25/helsinki/) (2020-01-25): A one-day travelogue of Helsinki, Finland: the Sibelius Park organ sculpture, the Rock Church, the world's cheapest LV, and other Nordic culture and... - [A Trip to Rovaniemi](https://longda.us/2020-01-23/rovaniemi/) (2020-01-23): A winter travel diary of the Rovaniemi aurora trip in Finland: icebreaker cruise, aurora photography tour, and forest skiing, with Nordic Travels booking... - [New Year Wish](https://longda.us/2020-01-01/New-Year-Wish/) (2020-01-01): Reflections and a wish list for the new year 2020: looking back at last year's unfinished goals, then setting goals for the year ahead such as blogging,... - [Reflections on \"Peak\"](https://longda.us/2018-12-13/keyilianxi/) (2018-12-13): Reading notes on 'Peak': refuting the idea of innate genius and the simplistic ten-thousand-hour rule, summarizing a training method built on four elements... - [Reflections on \"Steve Jobs\"](https://longda.us/2018-10-08/qiaobusi/) (2018-10-08): Reflections on the biography 'Steve Jobs': exploring obsession versus collective wisdom, the techniques of a world-class marketing master, and how different... - [Reflections on the Cognitive Revolution](https://longda.us/2017-12-23/knowledgerevolution/) (2017-12-23): Notes on Li Shanyou's 'Cognitive Revolution' course: a walkthrough of core theories such as first principles, inductive and deductive thinking,... - [A Self-Guided Tour Around Taiwan](https://longda.us/2016-10-14/traveltaiwan/) (2016-10-14): A guide to a self-guided tour around Taiwan: handling the travel permit endorsement and entry permit, planning a half-island route, attractions in Kenting... - [A Short Talk on Job-Hopping](https://longda.us/2016-09-23/jump/) (2016-09-23): A short talk on job-hopping: analyzing the essence and trade-offs of changing jobs across dimensions such as salary, future career and company prospects,... - [Complaining About GoDaddy](https://longda.us/2016-08-10/godaddy/) (2016-08-10): A rant about GoDaddy deleting my personal hosting and wiping out five years of blog posts: a strong condemnation of their lack of accountability, plus a... ### Hands-on Practice (11) - [Vector Database Best Practices Distilled by OceanBase over Three Years](https://longda.us/2026-06-01/2026-06-01-vector-database-best-practices/) (2026-06-01): Two OceanBase vector database experts distill three years of hands-on PoC experience, systematically covering vector index selection, memory and disk... - [Stop Following the Crowd Blindly: The Core Principles Behind Seven Companies' Real-World Vector Database Choices](https://longda.us/2026-04-09/2026-04-09-vector-database-selection-principles/) (2026-04-09): This article reviews the real thinking and practice of seven companies—including Qihoo 360, China Unicom, Lalamove, Weibo, and Quwan Technology—in their... - [My Editor Job Has Been Replaced by AI — A seekdb Fork Table Capability Test Report](https://longda.us/2026-04-01/2026-04-01-seekdb-fork-table-test-report/) (2026-04-01): An experiment report on having an AI Agent automatically deploy seekdb and test its Fork Table capability. Through five scenarios, data isolation, version... - [Saving My Company $5,000 in Just Two Weekends: Refactoring a Knowledge Base from a Multi-Database Architecture to an AI-Native Database](https://longda.us/2025-12-25/2025-12-25-ai-native-database-knowledge-base-refactor/) (2025-12-25): In two weekends, the author refactored an enterprise knowledge base from a four-database stack (PostgreSQL + Elasticsearch + Pinecone + Redis) into a... - [A Guide to Using the OceanBase Vector Database](https://longda.us/2025-09-24/2025-09-24-oceanbase-vector-db-guide/) (2025-09-24): The official guide to using the OceanBase vector database: a detailed walkthrough of vector index types such as HNSW, HNSW_SQ, HNSW_BQ, IVF, and IVF_PQ,... - [Deploying the OceanBase Database in an Ubuntu Virtual Machine](https://longda.us/2025-09-19/2025-09-19-ubuntu-vm-deploy-oceanbase/) (2025-09-19): This article shares the complete process of deploying a standalone OceanBase Community Edition database via OBD's GUI in a WSL Ubuntu 22.04 virtual machine... - [A Practical Guide to Vector Databases for Personalized Recommendation in UGC Communities](https://longda.us/2025-08-25/2025-08-25-vector-db-ugc-recommendation/) (2025-08-25): A practical guide to building a personalized recommendation system for UGC communities on OceanBase's native vector capabilities: dual-vector user interest... - [A New Open-Source Community Development Experience in the Vibe Coding Era](https://longda.us/2025-07-28/2025-07-28-vibe-coding-opensource-community/) (2025-07-28): Drawing on the real experience of an OceanBase community developer, this article shows how to use Cursor together with the OceanBase MCP Server to create... - [OBCP V4 Official Mock Exam Analysis (with Answers)](https://longda.us/2025-07-22/2025-07-22-obcp-v4-mock-exam-analysis/) (2025-07-22): This article compiles the 50 mock questions publicly available on the OBCP V4 official site—covering single-choice, multiple-choice, and true/false... - [The Evolution of OceanBase Auto-increment Columns and Best Practices](https://longda.us/2025-07-21/2025-07-21-oceanbase-auto-increment-evolution/) (2025-07-21): This article traces the evolution of OceanBase auto-increment columns from 4.0.0 to 4.2.3, compares the principles and jump behavior of the ORDER and... - [OceanBase PoC Lessons Learned (Part 2) — AP Workloads](https://longda.us/2025-07-07/2025-07-07-oceanbase-poc-ap-business/) (2025-07-07): This article summarizes hands-on experience from OceanBase AP workload PoCs, centered on business migration strategy and database object design. It covers... ### News (9) - [Build the Data Foundation for the Agent Era: Contribute to Easy Data x AI](https://longda.us/2026-07-02/2026-07-02-easy-data-ai-course-call/) (2026-07-02): Help co-build Easy Data x AI, an open introductory course on data foundations, AI agents, retrieval, memory, and practical AI applications. - [OceanBase Community Monthly: AgentSeek Launches as seekdb Delivers a 22× Streaming Throughput Gain](https://longda.us/2026-06-10/2026-06-10-oceanbase-community-monthly-agentseek-seekdb/) (2026-06-10): OceanBase's June roundup covers seekdb 1.3.0 async indexing with 22× streaming throughput, the AgentSeek agent toolkit, and obd/obdiag upgrades. - [Shanghai Meetup Highlights: Xinye's Cost Cuts, Suanzhi Future's Hybrid Search, and AgentSeek's One-Stop Agent Engineering](https://longda.us/2026-06-03/2026-06-03-shanghai-meetup-recap/) (2026-06-03): A recap of the Shanghai Agent Infra technical salon co-hosted by OceanBase and the LangChain Community: the debut of the AgentSeek enterprise-grade agent... - [OceanBase Community Monthly: Major Updates to PowerMem, OMS, and obdiag](https://longda.us/2026-05-21/2026-05-21-oceanbase-community-monthly-2026-05/) (2026-05-21): OceanBase Community Monthly for May 2026: PowerMem v1.0.0 integrates pyseekdb for embedded vector storage, OMS V4.2.13-CE adds ES, MongoDB, and ClickHouse... - [Shanghai, Here We Come! On 5/30, OceanBase × LangChain Join Forces to Debut \"AgentSeek\" and Define a New Paradigm for Enterprise Agent Development](https://longda.us/2026-05-13/2026-05-13-shanghai-oceanbase-langchain-meetup-preview/) (2026-05-13): On May 30, OceanBase teams up with the LangChain Community for an offline Meetup in Zhangjiang, Shanghai, where it will fully unveil AgentSeek, an... - [OceanBase Teams Up with Baidu ERNIE & PaddlePaddle, Qoder, and Multiple Hardware Vendors to Explore Production-Grade Agent Deployment](https://longda.us/2026-04-25/2026-04-25-oceanbase-paddle-qoder-agent-production/) (2026-04-25): On April 25, OceanBase joined forces with Baidu ERNIE & PaddlePaddle, Qoder, and several smart-hardware vendors to host the \"Storage and Compute Evolution... - [Live from the Community Carnival! Open Source, Open Ecosystem, Shared Success — a 13-Year-Old Takes Second Place in AI Coding!](https://longda.us/2026-02-06/2026-02-06-community-carnival-2026/) (2026-02-06): On January 31, the 2026 OceanBase Community Carnival was held in Shanghai, gathering over 260 developers. Through keynotes, panel discussions, AI Coding... - [Born for AI: Efficiently Build Your Agent and AI System Architecture with OceanBase seekdb](https://longda.us/2025-12-03/2025-12-03-seekdb-agent-ai-architecture/) (2025-12-03): After open sourcing its AI-native database seekdb, OceanBase launched a writing contest with prizes, inviting developers to deploy and experience seekdb, or... - [A Recap of the Hands-on AI Workshop at the OceanBase Annual Conference](https://longda.us/2025-11-28/2025-11-28-oceanbase-handson-ai-workshop/) (2025-11-28): A recap of the Hands-on AI Workshop at the OceanBase Annual Conference: hundreds of developers, guided by experts from LangChain, Dify, and OceanBase,... ### Product Deep Dive (9) - [OceanBase seekdb 1.3.0 Released: 22x Performance Gain, Jitter-Free P99](https://longda.us/2026-06-09/2026-06-09-seekdb-1-3-0-release/) (2026-06-09): OceanBase seekdb 1.3.0 is here, introducing an asynchronous index model based on Change Stream that decouples writes from index building. In streaming... - [seekdb 1.2.0 Released: Primary-Standby Disaster Recovery Goes Live, and Full-Database Cloning in Seconds Is Here](https://longda.us/2026-04-03/2026-04-03-seekdb-1-2-0-release/) (2026-04-03): seekdb 1.2.0 is officially released, bringing its first high-availability solution—a primary-standby asynchronous replication architecture supporting both... - [Giving OpenClaw Long-Term Memory — PowerMem 1.0.0 Officially Released](https://longda.us/2026-03-19/2026-03-19-powermem-1-0-0-release/) (2026-03-19): OceanBase's open-source intelligent memory system PowerMem 1.0.0 is officially released: a new pmem CLI operations plane and a Dashboard cognition plane,... - [From Vibe Coding to AI Agents — OceanBase seekdb Builds a Millisecond-Level Data Sandbox for the AI Era](https://longda.us/2026-03-03/2026-03-03-seekdb-ai-data-sandbox/) (2026-03-03): OceanBase seekdb 1.1.0 introduces the Fork Table feature. Based on copy-on-write and consistent snapshots, it creates logically independent,... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 2)](https://longda.us/2026-01-29/2026-01-29-unified-ai-data-stack-part2/) (2026-01-29): This article analyzes RAG's architectural evolution from Naive and Advanced to Modular RAG and its production pain points, and introduces PowerRAG — an... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 1)](https://longda.us/2026-01-28/2026-01-28-unified-ai-data-stack-part1/) (2026-01-28): This article dissects the new database needs and pain points developers face in the AI era, and introduces OceanBase seekdb — a lightweight, multimodal,... - [A Deep Dive into the OceanBase Ecosystem Toolchain — OAT / obd / OCP / obshell](https://longda.us/2026-01-08/2026-01-08-oceanbase-ecosystem-tools/) (2026-01-08): Zhimin, the product owner for OceanBase ecosystem tools, takes a deep dive into the roles and relationships of the four operations and management tools —... - [A Developer's View of OceanBase's Open-Source AI Product Trio](https://longda.us/2025-12-26/2025-12-26-oceanbase-ai-products-developer-view/) (2025-12-26): An OceanBase engineer offers a developer's take on three open-source AI products—seekdb, PowerRAG, and PowerMem—dissecting the three big challenges of the... - [In the AI Era, Why Did OceanBase Open Source an AI-Native Database Like seekdb?](https://longda.us/2025-11-26/2025-11-26-why-oceanbase-opensource-seekdb/) (2025-11-26): Feng Zhongyan (Lao Ji), General Manager of OceanBase's Open Source Ecosystem, systematically answers three questions—why seekdb was open sourced, how it... ### Industry Insights (7) - [LangChain \"Goes Off-Script\" and Builds a Database from Scratch?](https://longda.us/2026-05-18/2026-05-18-langchain-builds-database/) (2026-05-18): To solve the problem of exploding Agent trace data in LangSmith, LangChain built a distributed database, SmithDB, from scratch. This article unpacks its... - [7 Million People Watch AI Wipe a Database, and the Culprit Writes a Bizarre Confession](https://longda.us/2026-05-09/2026-05-09-ai-deletes-database-incident/) (2026-05-09): PocketOS's AI Agent, running in Cursor + Claude Opus, unilaterally deleted the Railway production database and its backups, causing an incident in 9 seconds... - [DeepMind CEO Interview: We're Just 4 Years and 3 Final Puzzle Pieces Away from AGI](https://longda.us/2026-05-09/2026-05-09-deepmind-ceo-agi-interview/) (2026-05-09): In a recent interview, Google DeepMind CEO Demis Hassabis predicts AGI could arrive by 2030 and pinpoints AI's three biggest gaps today: continual learning,... - [Talking with AI: How Do You Survive the AI Chaos?](https://longda.us/2026-04-25/2026-04-25-surviving-ai-era-conversation/) (2026-04-25): A survival guide distilled from a conversation with AI—covering the logic of big-tech layoffs, the predicament at each level from P6 to P9, a four-layer... - [Developers Cheer, Ordinary People Are Lost: After OpenClaw, Which Way for 'Usable AI'?](https://longda.us/2026-02-11/2026-02-11-usable-ai-after-openclaw/) (2026-02-11): Compiled from a panel discussion at the OceanBase Community Carnival, where guests from Eigent, Ant Bailing, Fellou, and others discuss the OpenClaw... - [Skills Arrive — Is Prompt Dead? In 2026, How Do We Build Controllable Thinking for Agents?](https://longda.us/2026-02-07/2026-02-07-skills-vs-prompt-agent-thinking/) (2026-02-07): A panel transcript from the OceanBase Community Carnival: experts from RAGFlow, FastGPT, Nowledge Labs, and OceanBase discuss where the RAG ecosystem is... - [Data-Driven Innovation and Transformation in the Pan-Internet Industry, and New Opportunities for Databases](https://longda.us/2025-06-16/2025-06-16-pan-internet-innovation-database-opportunities/) (2025-06-16): An exploration of how data-driven change is transforming the pan-internet industry and the new opportunities this creates for databases, covering technical... ### User Practices (1) - [Migrating from HBase to OceanBase: The Ultimate Solution for Real-Time Data Writes with Flink](https://longda.us/2026-04-24/2026-04-24-hbase-to-oceanbase-flink-migration/) (2026-04-24): This article introduces a real-time data-write solution based on Flink and OceanBase OBKV-HBase—fully compatible with the HBase API, supporting buffered... ## Full Article Index > Auto-generated list of all 180 articles, grouped by category and newest first within each. Each entry links to the canonical page; plain-text bodies live in /llms-full.txt. ### AI Applications (44) - [From Whispers to the Bulletin Board: Multi-Agent Memory Isolation in Action](https://longda.us/2026-08-03/2026-08-03-multi-agent-memory-isolation-game/) (2026-08-03): A PowerMem and seekdb game shows how multi-agent memory remains isolated until an operator publishes a private card to a shared bulletin board. - [After WAIC, I Stopped Believing in the Omnipotent Agent](https://longda.us/2026-07-28/2026-07-28-waic-not-omnipotent-agent/) (2026-07-28): WAIC field notes show that agents create value in bounded use cases—with ontology, live data, DRIs, and on-device memory—not as all-purpose generalists. - [Graph Engineering: Don't Let One Agent Be Both Player and Referee](https://longda.us/2026-07-27/2026-07-27-graph-engineering-agent-roles/) (2026-07-27): Graph Engineering does not replace the agent loop. It separates execution, validation, and direction so one agent does not judge its own work. - [Designing AI Memory Systems: Architecture and Engineering Practice](https://longda.us/2026-07-21/2026-07-21-ai-memory-system-architecture/) (2026-07-21): An architectural view of AI memory as a Memory OS built on a Raw Ledger, Views, and Policy, followed by a practical implementation in PowerMem. - [What Should a Database Become When AI Agents Start Using It?](https://longda.us/2026-07-06/2026-07-06-agent-database-oceanbase-lakebase/) (2026-07-06): An editorial look at OceanBase Lakebase, seekdb, and PowerMem for AI-agent data, hybrid retrieval, safe experimentation, and long-term memory. - [Evaluating GLM-5.2 on Long-Horizon Tasks: PowerMem Python-to-TypeScript SDK Alignment](https://longda.us/2026-06-29/2026-06-29-glm-powermem-typescript-evaluation/) (2026-06-29): A seven-round GLM-5.2 evaluation of PowerMem Python-to-TypeScript SDK alignment, testing long-horizon engineering discipline beyond context length. - [Predicting the 2026 World Cup with seekdb: Data Modeling to Probability Simulation](https://longda.us/2026-06-22/2026-06-22-seekdb-world-cup-monte-carlo/) (2026-06-22): Build a 2026 FIFA World Cup Monte Carlo demonstration in seekdb with Elo ratings, Poisson goal models, and SQL stored procedures. - [PowerMem Quick Start: Building a Self-Evolving Agent Memory Layer](https://longda.us/2026-06-12/2026-06-12-powermem-quick-start/) (2026-06-12): Install PowerMem on Linux, open the Dashboard, then connect Claude Code and OpenClaw for cross-session Agent memory with self-evolving recall. - [How to Combine PaddleOCR with OceanBase to Achieve the First Mile of Enterprise Asset Intelligence](https://longda.us/2026-06-05/2026-06-05-paddleocr-oceanbase-asset-intelligence/) (2026-06-05): From Yang Youzhi of Baidu's PaddlePaddle AI Studio community, this article explains how to use PaddleOCR-VL-1.6 to parse unstructured enterprise documents... - [Building an Agent System Solution on OceanBase & LangChain to Get Agents into Production Fast](https://longda.us/2026-06-02/2026-06-02-oceanbase-langchain-agent-solution/) (2026-06-02): At the Shanghai Meetup, LangChain & OceanBase community ambassador Canghai Jiusu unveiled AgentSeek — an agent engineering toolkit built on OceanBase and... - [LangChain's Crash Course? Using the Harness to Explain the Value and Practice of an All-in-one Data Foundation](https://longda.us/2026-05-26/2026-05-26-langchain-harness-allinone-data-base/) (2026-05-26): Starting from the definition and layered structure of the Harness, and drawing on the plugin-based design of the open-source project Bub and the Tape... - [The OceanBase Community Opens Up Its Skill Universe!](https://longda.us/2026-05-22/2026-05-22-oceanbase-community-skill-universe/) (2026-05-22): The OceanBase community open-sources the oceanbase-skills repository, debuting deployment and operations Skills that let an AI Agent handle cluster... - [Why Is Your Token Consumption So High? Money-Saving Tricks with OpenClaw](https://longda.us/2026-05-08/2026-05-08-openclaw-token-cost-saving/) (2026-05-08): OpenClaw's full-load MEMORY.md and lossy compaction are two big token black holes. seekdb M0 uses on-demand retrieval of cloud memory, rule-based... - [How Do You Write a Workflow Skill? Patterns and Best Practices Distilled from 7 Top-Tier Projects](https://longda.us/2026-04-27/2026-04-27-workflow-skill-best-practices/) (2026-04-27): This article analyzes line by line 7 production-grade Skills from teams such as OpenAI, Google Labs, obra, and Trail of Bits, distilling 5 workflow Skill... - [Token, Harness, OpenClaw, RAG, MCP, Agent—How Do They All Relate? One Diagram Makes It Clear](https://longda.us/2026-04-16/2026-04-16-ai-concepts-relationship-diagram/) (2026-04-16): Using the real task of \"generating a new-product R&D slide deck with data charts,\" this article walks through the relationships and division of labor among... - [bubseek — Turning an Agent's Footprints into Team Insights](https://longda.us/2026-04-15/2026-04-15-bubseek-agent-insights/) (2026-04-15): bubseek is a self-driven insight Agent built on the bub framework and OceanBase seekdb. With just a single prompt, it can autonomously connect to data... - [Say Goodbye to Losing OpenClaw Configs—Mindkeeper Beta Invitation](https://longda.us/2026-04-10/2026-04-10-mindkeeper-beta-invitation/) (2026-04-10): Mindkeeper is a version management tool built specifically for AI Agent configuration files. Using a shadow Git repository, it automatically tracks every... - [OpenClaw Ships Yet Another Release — How to Track Every Second of Its Spend in Real Time and Open the Agent \"Thinking\" Black Box](https://longda.us/2026-03-24/2026-03-24-openclaw-cost-tracking/) (2026-03-24): After OpenClaw's new release, the compute consumption of parallel multi-Agent and long-horizon tasks is harder to control. The open-source tool ClawProbe... - [Why Does OpenClaw Get Better the More You Use It?](https://longda.us/2026-03-18/2026-03-18-why-openclaw-gets-better/) (2026-03-18): A deep look at the essence of OpenClaw \"getting better the more you use it\": through a read-write loop over md data files such as... - [OpenClaw in Practice: One Mac, Six Agents, the Engineering Journey from \"Chatting\" to \"Getting Work Done\"](https://longda.us/2026-03-11/2026-03-11-openclaw-mac-six-agents/) (2026-03-11): On a single Mac, the author uses OpenClaw to build a multi-Agent team of one orchestrator plus five specialist Agents, with 52 cron jobs rotating around the... - [OpenClaw + seekdb skills: Build Your Own Personal seekdb Assistant](https://longda.us/2026-03-04/2026-03-04-openclaw-seekdb-skills-assistant/) (2026-03-04): This article explains how to install seekdb Agent Skills in the personal AI assistant OpenClaw via pip or ClawHub, load the seekdb official documentation... - [EchoKit × OceanBase seekdb: An Open-Source, Localized Voice AI Framework](https://longda.us/2026-02-27/2026-02-27-echokit-seekdb-voice-ai/) (2026-02-27): EchoKit is a Rust-based voice AI framework open-sourced by the WasmEdge team. It supports local deployment and modular replacement of ASR/LLM/TTS, and... - [Building Persistent Memory for an AI Agent With seekdb: From \"Full Context\" to \"Precise Recall\"](https://longda.us/2026-02-26/2026-02-26-seekdb-agent-persistent-memory/) (2026-02-26): This article explains how to build a vectorized persistent memory system for a Node.js AI Agent based on the seekdb-js SDK and Qwen3 Max (via OpenRouter),... - [uv × pyseekdb: Driving the Cost of a RAG Environment and Retrieval to a Minimum](https://longda.us/2026-02-13/2026-02-13-uv-pyseekdb-rag-setup/) (2026-02-13): This article introduces the combination of two tools, uv and pyseekdb. uv solves Python environment reproducibility with pyproject.toml and uv.lock, while... - [Vibe Coding Notes — Google AI Studio](https://longda.us/2026-01-23/2026-01-23-vibe-coding-google-ai-studio/) (2026-01-23): A look at how to do Vibe Coding with the token-free Google AI Studio: through just four natural-language exchanges, we build a zero-code AI app that turns a... - [Master the AI-Native Database with Natural Language — the seekdb MCP Server](https://longda.us/2026-01-22/2026-01-22-seekdb-mcp-server/) (2026-01-22): This article explains how to install and configure the seekdb MCP Server, covering both embedded and client/server deployment modes and the Stdio and SSE... - [Help the Cursor AI Assistant Instantly Get Vector Databases — A Guide to the Cursor seekdb Extension](https://longda.us/2026-01-14/2026-01-14-cursor-seekdb-extension-guide/) (2026-01-14): This article explains how to install and use the seekdb Cursor Extension to inject seekdb's official documentation into the .cursor/rules directory, giving... - [Hybrid Search: A Hands-on Guide to Multimodal Retrieval (Chapter 4)](https://longda.us/2026-01-09/2026-01-09-hybrid-search-multimodal-guide/) (2026-01-09): This is Chapter 4 of the Agentic RAG series. It explains in detail how Hybrid Search fuses three modalities — vector search, sparse search, and full-text... - [A Spoon-Fed Tutorial (Bonus Edition) — Deploying Dify on K8s](https://longda.us/2026-01-04/2026-01-04-dify-on-k8s-tutorial/) (2026-01-04): This is the bonus, spoon-fed tutorial in the \"Dify x OceanBase seekdb\" series. It demonstrates how to deploy Dify—using seekdb as both its metadata database... - [A Step-by-Step Tutorial II — A Guide to Using Dify x OceanBase seekdb](https://longda.us/2025-12-11/2025-12-11-dify-oceanbase-seekdb-guide/) (2025-12-11): A step-by-step tutorial detailing how to configure OceanBase seekdb as both the metadata database and the vector database in Dify v1.10.1, replacing a... - [Building an Intelligent Book Search App from Scratch with seekdb](https://longda.us/2025-12-10/2025-12-10-seekdb-book-search-app/) (2025-12-10): Using an intelligent book search app as an example, this article walks you hands-on through data import, vector embedding, and HNSW index creation with... - [A Step-by-Step Tutorial — Building a RAG Application with OceanBase seekdb](https://longda.us/2025-12-05/2025-12-05-seekdb-rag-tutorial/) (2025-12-05): This is a step-by-step tutorial that walks you hands-on through building a RAG (Retrieval-Augmented Generation) system with OceanBase seekdb, covering the... - [Explaining DeepSeek-OCR in the Plainest Language — The Disruptive Idea of Optical Context Compression](https://longda.us/2025-10-31/2025-10-31-deepseek-ocr-jinghua/) (2025-10-31): An in-depth reading of the disruptive idea behind the DeepSeek-OCR paper — optical context compression. It explores how to use pixels instead of text as LLM... - [Exploring How AI Reshapes Database Products — obloader agent and OceanBase Agent](https://longda.us/2025-10-13/2025-10-11-ai-gaibian-shujuku-chanpin/) (2025-10-13): Exploring a new form of combining AI with database products. This article introduces how the obloader agent simplifies the use of data-loading tools through... - [Code Indexing in Practice in the Age of AI Coding](https://longda.us/2025-08-22/2025-08-22-ai-coding-code-index/) (2025-08-22): This article traces the four leaps of code search — from text matching to semantic retrieval, graph indexing, and agentic search — and shares hands-on... - [A Step-by-Step Guide to Building an Agent with ModelScope x OceanBase MCP](https://longda.us/2025-08-15/2025-08-15-modelscope-oceanbase-mcp-agent/) (2025-08-15): OceanBase and ModelScope jointly introduce a new paradigm for AI-driven intelligent database management. Through MCP, developers can create, run, manage,... - [Dify + OceanBase: Multi-Scenario Practice for Landing AI Workloads](https://longda.us/2025-08-12/2025-08-12-dify-oceanbase-ai-multi-scenario/) (2025-08-12): This article shares the practice of choosing Dify on OceanBase to build AI applications, using OceanBase to consolidate PostgreSQL, Redis, and Weaviate into... - [Context Engineering: A Code Documentation Retrieval Engine Built on OceanBase](https://longda.us/2025-08-08/2025-08-08-context-engineering-code-doc-retrieval/) (2025-08-08): Doc2Dev builds a code documentation retrieval engine on the OceanBase vector database, providing AI coding assistants with up-to-date documentation through... - [Say Goodbye to Tedious Manual Analysis—OceanBase Agent Makes Database Operations Easy!](https://longda.us/2025-08-04/2025-08-04-oceanbase-agent-database-ops/) (2025-08-04): OceanBase Agent leverages large models to simplify daily database operations. With 70+ built-in SQL tools, support for custom Tools, Playbook task flows,... - [Agentic AI, Built on Dify x OceanBase in Practice](https://longda.us/2025-08-01/2025-08-01-agentic-ai-dify-oceanbase/) (2025-08-01): A core Dify contributor unpacks the Agentic AI trend and the platform capabilities it demands, introduces how OceanBase provides one-stop support for Dify... - [AI Replacing the Traditional GUI: An OBCloud Workflow Based on MCP](https://longda.us/2025-07-24/2025-07-24-mcp-obcloud-workflow/) (2025-07-24): Traditional database operations require clicking through the console level by level and repeatedly consulting documentation—slow and inefficient. From a... - [Hands-On: Building an MCP Advisor on OceanBase](https://longda.us/2025-07-11/2025-07-11-oceanbase-mcp-advisor/) (2025-07-11): Faced with the challenges of dynamic planning, service discovery, and usage complexity brought by tens of thousands of MCP tools, Ant Group Agent engineer... - [Dify + OceanBase + MCP: A Trio That Makes Building RAG Applications Easy](https://longda.us/2025-07-10/2025-07-10-dify-oceanbase-mcp-rag/) (2025-07-10): Through a hands-on case study, this article shows how to use Dify, OceanBase, and MCP to build a fully functional RAG application from scratch. It covers... - [AI Application Development: An Innovative Unstructured Document Analysis System That Avoids the Limitations of Traditional Approaches](https://longda.us/2025-07-04/2025-07-04-ai-app-unstructured-document-analysis/) (2025-07-04): A team from Beijing Institute of Technology built QUEST, an intelligent unstructured document analysis system on OceanBase. Through sampling-based... ### Technical Deep Dive (44) - [An OceanBase Backup Mystery: Who Cleaned Up My Backup Data?](https://longda.us/2026-06-15/2026-06-15-oceanbase-backup-cleanup-case/) (2026-06-15): An OceanBase backup cleanup case study: how full, incremental, and log backups link into recovery chains—and why directories disappear on schedule. - [A Message's Lifecycle in PowerMem: From Ingestion to Forgetting](https://longda.us/2026-06-12/2026-06-12-powermem-message-lifecycle/) (2026-06-12): Follow a meeting reminder through PowerMem's agent memory lifecycle: six-dimension importance scoring, tier placement, spaced review, retrieval ranking, and... - [From Neurons to Code Engineering: The Forgetting Design of the PowerMem Memory System](https://longda.us/2026-06-08/2026-06-08-powermem-forgetting-design/) (2026-06-08): Starting from synaptic plasticity, memory consolidation, information theory, and the Ebbinghaus forgetting curve, this article unpacks the forgetting... - [A Deep \"Dissection\" of the AI Agent Harness](https://longda.us/2026-05-25/2026-05-25-ai-agent-harness-deep-dive/) (2026-05-25): This article introduces Akshay Pachaar's long-form piece \"The Anatomy of an Agent Harness,\" systematically breaking down the Agent Harness architectures of... - [A Deep Dive into LLM Wiki / Obsidian-Wiki / GBrain: The \"Self-Organization\" and \"Self-Evolution\" of Knowledge in the Agent Era](https://longda.us/2026-04-28/2026-04-28-llm-wiki-knowledge-self-organization/) (2026-04-28): From a knowledge-engineering perspective, this article dissects the designs of Karpathy's LLM Wiki, Obsidian-Wiki, and GBrain, analyzing the... - [How Agent / Skills / Teams Architectures Evolve, and How to Choose Among Them](https://longda.us/2026-03-10/2026-03-10-agent-skills-teams-architecture-evolution/) (2026-03-10): This article traces the evolution of Agent architectures from Single Agent and Multi-Agent to Agent Skills and Agent Teams. Drawing on a Google DeepMind... - [How Does OpenClaw Make AI Feel \"Human\"?](https://longda.us/2026-02-25/2026-02-25-openclaw-humanlike-ai/) (2026-02-25): This article takes the form of study notes to unpack the engineering mechanisms OpenClaw uses to make AI feel \"human\" — live context assembled at runtime,... - [A Guide to Optimizing Vector Indexes in OceanBase](https://longda.us/2025-12-19/2025-12-19-oceanbase-vector-index-optimization/) (2025-12-19): Xia Jin, a vector-index engineer on OceanBase, takes a deep dive into how OceanBase / seekdb vector indexes are built and the structure of their five... - [The Mystery of OceanBase Session IDs](https://longda.us/2025-11-21/2025-11-21-oceanbase-session-id-mystery/) (2025-11-21): This article systematically untangles the design logic of Session IDs in OceanBase. The two connection types — C connections and S connections — correspond... - [Explaining AI Memory in the Plainest Possible Language](https://longda.us/2025-11-18/2025-11-18-ai-memory-explained/) (2025-11-18): This article explains AI Memory in plain language. Starting from how the human brain classifies and operates on memory, it compares the storage areas and... - [OceanBase Partitioning Fundamentals](https://longda.us/2025-11-14/2025-11-14-oceanbase-partition-basics/) (2025-11-14): A systematic introduction to OceanBase partitioning fundamentals, covering the role of partitioning in partition pruning, data maintenance, and data... - [The Database Evolution of the AI Era — From Vectors to Hybrid Search](https://longda.us/2025-11-07/2025-11-07-database-evolution-vector-hybrid-search/) (2025-11-07): An accessible, easy-to-understand explainer. Starting from the classification of structured, semi-structured, and unstructured data, it explains why vector... - [A New Way to Tackle \"Read Amplification\" — Merge-On-Write Tables in OceanBase](https://longda.us/2025-11-06/2025-11-06-oceanbase-merge-on-write/) (2025-11-06): An introduction to the Merge-On-Write table launched in OceanBase 4.3.5. By splitting an update into delete + insert and writing the full set of columns, it... - [Key Techniques and Methods for OceanBase Database Diagnosis and Tuning](https://longda.us/2025-09-18/2025-09-18-oceanbase-diagnosis-tuning/) (2025-09-18): This article systematically reviews the fault classification and root causes of OceanBase, proposes a five-step diagnosis and tuning process—problem... - [When the Intelligent Robot Says \"Bro, the Language Just Doesn't Connect\"—How Should You, the Developer, Respond?](https://longda.us/2025-09-12/2025-09-12-ai-robot-language-developer/) (2025-09-12): When an intelligent robot cannot understand minor languages such as Thai, developers can use OceanBase's plugin mechanism to respond quickly to... - [Getting to Know ASH — Opening the Database's \"Treasure Box of Time\"](https://longda.us/2025-09-01/2025-09-01-ash-database-monitoring/) (2025-09-01): ASH (Active Session History) is the OceanBase database's \"intelligent monitoring system,\" taking a state snapshot of active sessions every second. Through... - [Safeguarding Performance in High-Concurrency Scenarios with OceanBase](https://longda.us/2025-08-26/2025-08-26-oceanbase-high-concurrency-performance/) (2025-08-26): From the design of kernel components — plan management, concurrency control, multi-dimensional caching, hot-row optimization, log aggregation, and... - [Hybrid Query Methods for Vector Indexes — Did You Pick the Right One?](https://longda.us/2025-08-19/2025-08-19-vector-index-hybrid-query/) (2025-08-19): This article explains the principles and usage of hybrid queries on OceanBase vector indexes, including how to choose among the three scalar-filtering... - [Automatic Partition Splitting — An Epic Usability Upgrade for OceanBase](https://longda.us/2025-08-11/2025-08-11-oceanbase-auto-partition-split/) (2025-08-11): A deep dive into OceanBase's automatic partition splitting feature: the pain points of manual partitioning, the principles, characteristics, applicable... - [OceanBase: How Does It Achieve Extreme Cost Reduction Across Hardware, Storage, and Operations?](https://longda.us/2025-07-29/2025-07-29-extreme-cost-reduction-analysis/) (2025-07-29): This article takes a deep dive into the core technologies behind OceanBase's extreme cost reduction across hardware, storage, and operations, including its... - [When OceanBase on K8s Meets AI — A Deep Dive into the Design of okctl-mcp-server](https://longda.us/2025-07-18/2025-07-18-okctl-mcp-server-design/) (2025-07-18): In this article, OceanBase community contributor Li Ziyi takes a deep dive into the design of okctl-mcp-server, explaining how the MCP protocol lets AI... - [The Architecture Design and Optimization of OceanBase's Standalone-Distributed Integrated Database](https://longda.us/2025-07-08/2025-07-08-standalone-distributed-integrated-database/) (2025-07-08): Zhifeng Yang, General Manager and Chief Architect of the OceanBase product, offers a technical interpretation of the standalone-distributed integrated... - [Using OpenManus to Build an Auto-Diagnosis Agent: Pinpoint Database Anomalies in 30 Minutes](https://longda.us/2025-06-27/2025-06-27-openmanus-diagnostic-agent/) (2025-06-27): Building a database auto-diagnosis Agent based on the OpenManus framework to quickly pinpoint database anomalies in 30 minutes, including the complete... - [OceanBase Vector Database Boosts AI Retrieval Efficiency by 45x and Halves AI Agent Development Costs](https://longda.us/2025-06-26/2025-06-26-oceanbase-vector-db-ai-search/) (2025-06-26): A comprehensive look at OceanBase 4.3's vector database capabilities, supporting HNSW indexes, hybrid search, and multimodal vectors, boosting AI retrieval... - [LLM vs. Small Models: The Right Way to Build an AI Agent for Domestic Database Operations](https://longda.us/2025-06-20/2025-06-20-ai-agent-database-ops/) (2025-06-20): Exploring how to use small models instead of full-scale LLMs for intelligent operations on domestic databases, enhancing reasoning ability through context,... - [How Database Technology and Solutions Support the Data Needs of the Pan-Internet Industry](https://longda.us/2025-05-30/2025-05-30-database-technology-support-pan-inter-industry/) (2025-05-30): Driven by the digital economy, this article explores how the pan-internet industry copes with the systemic challenges of exponential data growth. It... - [A Quick Introduction to Vector Databases](https://longda.us/2025-05-25/2025-05-25-vector-database-example/) (2025-05-25): A gentle introduction to vector database fundamentals: Embedding techniques, similarity metrics, search algorithms (HNSW, IVF, DiskANN), and index... - [Integrating OceanBase Monitoring with Prometheus/Grafana](https://longda.us/2021-11-21/obagent/) (2021-11-21): OceanBase Getting Started -- Integrating OceanBase Monitoring with Prometheus/Grafana This article explains the key context, decisions, and practical takeaways. - [OceanBase Offline Installation](https://longda.us/2021-11-20/ob_offline_install/) (2021-11-20): A guide to the offline installation of an OceanBase distributed three-replica cluster, covering passwordless SSH, disk planning, deploying OBServer/OBProxy... - [OceanBase Developer Handbook, Part 5: How to Debug OceanBase](https://longda.us/2021-11-11/debug_ob/) (2021-11-11): OceanBase Developer Handbook, Part 5: How to Debug OceanBase This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation](https://longda.us/2021-11-10/modify_ob_docs/) (2021-11-10): OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor](https://longda.us/2021-10-30/contribute_to_ob/) (2021-10-30): OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment](https://longda.us/2021-10-23/set_ide/) (2021-10-23): OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code](https://longda.us/2021-10-16/build_ob/) (2021-10-16): OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code This article explains the key context, decisions, and practical takeaways. - [Disk Performance Testing](https://longda.us/2020-07-12/fileio/) (2020-07-12): Using sysbench to compare the I/O performance of Alibaba Cloud ESSD, SSD cloud disks, and local NVMe disks, covering the test script parameters and the... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc](https://longda.us/2020-07-05/tpcc/) (2020-07-05): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc This article explains the key context, decisions,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench](https://longda.us/2020-06-28/sysbench/) (2020-06-28): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench This article explains the key context,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH](https://longda.us/2020-06-22/TPCH/) (2020-06-22): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH This article explains the key context, decisions,... - [A Detailed Analysis of filesort](https://longda.us/2020-06-21/mysql-filesort/) (2020-06-21): Notes on the MySQL filesort sorting mechanism: comparing the original and modified algorithms, the meaning of max_sort_length, and how the sort/addon fields... - [An Introduction to Clustered Indexes](https://longda.us/2020-06-14/mysql-cluster-index/) (2020-06-14): Notes on MySQL clustered and non-clustered indexes: InnoDB's primary-key-clustered storage, the advantages of covering indexes, and a comparison with... - [Spanner: Google’s Globally Distributed Database](https://longda.us/2019-11-05/spanner/) (2019-11-05): Reading notes on the Google Spanner globally distributed database paper: TrueTime, Paxos, and externally consistent transactions. - [Getting Started with Scala](https://longda.us/2016-08-24/scala-start/) (2016-08-24): Notes on getting started with Scala: the interpreter, val/var variables, functions and the Unit type, the foreach syntactic sugar, arrays, side effects, and... - [Scala Overview](https://longda.us/2016-08-23/scala-general/) (2016-08-23): Overview of the Scala language: a statically typed JVM language that blends object-oriented and functional programming, introducing the Actor concurrency... - [Scaling Out ZooKeeper](https://longda.us/2015-09-10/zookeeper-enlarge/) (2015-09-10): A hands-on guide to scaling ZooKeeper across data centers in the same city: expanding a single-DC three-node cluster into a 2-2-1 layout, adding nodes step... ### Enterprise Cases (30) - [Behind a 200x SQL Speedup: How Dewu Tuned OceanBase Execution Plans and Hints](https://longda.us/2026-07-15/2026-07-15-dewu-oceanbase-sql-hint-tuning/) (2026-07-15): At Dewu, OceanBase plan-cache reuse, partition pruning, columnar indexes, parallel execution, and Hints cut a complex SQL from 4s to 0.02s—about 200x. - [Suanzhi Future Builds an OceanBase Hybrid Search Foundation for Life-Science AI Data Synthesis](https://longda.us/2026-07-01/2026-07-01-life-science-hybrid-search/) (2026-07-01): How Suanzhi Future is building an OceanBase hybrid-search foundation for life-science AI data synthesis, combining exact lookup, full-text retrieval, and... - [Xinye Technology's OceanBase Practice: From Risk-Control Core to an AI Data Foundation](https://longda.us/2026-06-25/2026-06-25-xinye-oceanbase-practice/) (2026-06-25): How Xinye Technology uses OceanBase for risk control, data archiving, high availability, multitenancy, and an AI-ready data foundation. - [NetEase Open-Sources lb-driver: Driver-Layer Load Balancing for OceanBase OBProxy](https://longda.us/2026-05-12/2026-05-12-netease-lb-driver-obproxy-load-balancing/) (2026-05-12): After migrating its core business from the DDB sharding middleware to OceanBase, NetEase Yunxin built and open-sourced lb-driver to eliminate the link... - [More Than Just Replacing HBase: How Baofu Payment Leveraged OceanBase to Build a Future-Ready, Unified 'TP+AP+KV+AI' Data Foundation](https://longda.us/2026-01-21/2026-01-21-baofu-payment-oceanbase-unified-data-base/) (2026-01-21): The Baofu Payment data team shares its complete practice of replacing HBase with OceanBase's OBKV-HBase — from architectural pain points and selection... - [Tens of Millions of Members, Billions of Transactions: When the CRM System Buckles, How Did a Leading Pharma Company Upgrade to OceanBase for Real-Time, Precision Marketing?](https://longda.us/2026-01-16/2026-01-16-pharma-crm-database-upgrade/) (2026-01-16): OceanBase: Facing tens of millions of members, billions of transactions, and multidimensional behavioral data, the CRM membership system of Chongqing... - [The Data Foundation for Zuoyebang's AI Business: OceanBase Vector Database Multi-cloud Deployment and Architecture Design Optimization](https://longda.us/2025-12-31/2025-12-31-zuoyebang-vector-database-multicloud/) (2025-12-31): Zuoyebang built the data foundation for its AI business on OceanBase. This article details vector database selection, cross-cloud primary-standby tenant... - [OceanBase at Didi: Large-Scale Operations Experience and New Feature Adoption](https://longda.us/2025-12-17/2025-12-17-didi-oceanbase-ops-practice/) (2025-12-17): Since 2024, Didi has used OceanBase to replace RocksDB and TokuDB. Using its ride-hailing growth service and core archive database as examples, this article... - [vivo's Domestic Database Technology Reserve: Using OceanBase to Break Through the Storage and Performance Bottlenecks of Large-Scale Data](https://longda.us/2025-11-13/2025-11-13-vivo-database-technology/) (2025-11-13): vivo's internet business introduced OceanBase to replace MySQL, covering four scenarios — data archiving, horizontal sharding, high concurrency, and HTAP —... - [Migrating from a Sharded MyCat Architecture to OceanBase | Lessons from Belle Fashion's Core Financial System Migration](https://longda.us/2025-10-31/2025-10-31-baili-mycat-qianyi-oceanbase/) (2025-10-31): Belle Fashion Group migrated its core financial system from a sharded MyCat architecture to OceanBase, achieving a 30x performance improvement, a 96.7%... - [How to Build a Mature, Stable, Cost-Effective, and Easy-to-Use AI Application — Quwan Technology's Hands-on Practice Building an Employee Assistant on OceanBase](https://longda.us/2025-10-22/2025-10-22-quwan-ai-yuangong-zhushou/) (2025-10-22): When selecting the underlying database for its custom AI assistant, Quwan Technology compared multiple vector databases and chose OceanBase. This article... - [How to Avoid Pointless Work — Qifu Technology Cuts Code-Refactoring Costs by 90% After Ditching Sharding with OceanBase](https://longda.us/2025-10-16/2025-10-16-qifu-fenkufenbiao-gaizao/) (2025-10-16): Qifu Technology adopted OceanBase to replace part of its MySQL and TiDB usage, cutting code-refactoring costs by 90%, halving storage costs, reducing... - [Migrating a Distributed Database to OceanBase — A Smooth Migration Built on NetEase Cloud Music's In-house CDC Service](https://longda.us/2025-09-25/2025-09-25-netease-music-cdc-migration-oceanbase/) (2025-09-25): NetEase Cloud Music shares how it migrated its PB-scale sharded DDB database to the native distributed database OceanBase. Built on its in-house CDC service... - [A Step-by-Step Guide to Optimizing Vector Search: A Game Company's Intelligent Customer Service and Recommendation System on OceanBase](https://longda.us/2025-09-11/2025-09-11-game-vector-search-oceanbase/) (2025-09-11): A card game company built an intelligent customer service and UGC community recommendation system on OceanBase's vector database. Through HNSW indexing,... - [NetEase Personal Mail Upgrades Its Database to OceanBase: A Dual Breakthrough in Reliability and Stability](https://longda.us/2025-09-02/2025-09-02-netease-mail-oceanbase-upgrade/) (2025-09-02): NetEase Personal Mail upgraded its sharded MySQL architecture to OceanBase. Through technology selection comparison, unique-key governance, partition and... - [Dmall and OceanBase: Achieving Full Inter-Tenant Resource Isolation and Low-Cost System Upgrades](https://longda.us/2025-08-27/2025-08-27-dmall-oceanbase-resource-isolation/) (2025-08-27): Dmall shares its hands-on experience migrating from MySQL to OceanBase in a retail SaaS scenario — using multi-tenant resource isolation, transparent... - [70% Performance Boost — CR Vanguard Upgrades Its Core Database to OceanBase](https://longda.us/2025-08-20/2025-08-20-crv-vanguard-database-upgrade/) (2025-08-20): CR Vanguard's subsidiary Wanjia Digital upgraded a middleware-based MySQL sharded cluster to OceanBase, achieving a seamless, business-transparent migration... - [Hardware Costs Down 52%: How 99Bill Reduced Costs and Boosted Efficiency After Adopting OceanBase](https://longda.us/2025-08-13/2025-08-13-99bill-oceanbase-cost-reduction/) (2025-08-13): A 99Bill DBA shares the three transformations of their DB architecture — from MySQL primary-standby and MyCAT sharding to OceanBase — detailing five... - [From v3.1 to v4.3, OceanBase Steadily Powers Kuaishou's PB-Scale Core Business Scenarios](https://longda.us/2025-08-06/2025-08-06-kuaishou-oceanbase-pb-scale/) (2025-08-06): Kuaishou migrated from MySQL sharding to OceanBase, covering PB-scale core businesses such as transaction reconciliation and payments, and upgraded from... - [Tongfang Smart Energy: OceanBase Powers a Secure, Reliable, High-Performance Energy Data Foundation](https://longda.us/2025-08-05/2025-08-05-tongfang-smart-energy-oceanbase/) (2025-08-05): After comparing HBase-Phoenix, Ignite, and TiDB for its new-energy and metro projects, Tongfang Smart Energy chose OceanBase 4.2.1, achieving twice the... - [Escaping Three Major Dilemmas, Cultivating Five Key Scenarios | How TAL Education's AI Business Cut Costs by 86% with OceanBase](https://longda.us/2025-07-30/2025-07-30-tal-ai-oceanbase-cost-reduction/) (2025-07-30): Facing three major dilemmas—sharding, resource isolation, and resource fragmentation—the TAL Education Group adopted OceanBase and deeply cultivated five... - [Weibo's Database Architecture Upgrade with OceanBase: Both Stable and Cost-Saving](https://longda.us/2025-07-23/2025-07-23-weibo-partition-table-practice/) (2025-07-23): Yang Shanggang, head of Weibo's database technology, takes a deep dive into Weibo's database architecture upgrade: replacing MySQL sharding with OceanBase... - [OceanBase: Du Xiaoman Breaks Down Database Selection Across Five Technical Scenarios, Doubling Cost Savings, Performance, and Efficiency](https://longda.us/2025-07-16/2025-07-16-duxiaoman-database-selection/) (2025-07-16): Zhao Hui, head of Du Xiaoman's Technology Committee, shares their unified storage architecture practice: selecting OceanBase based on four cost advantages... - [China Unicom's ChatDBA Upgrades Its Vector Database: A Hands-On Comparison of Milvus, Elasticsearch, and OceanBase](https://longda.us/2025-07-09/2025-07-09-china-unicom-chatdba-vector-database/) (2025-07-09): China Unicom shares the journey of building ChatDBA, its intelligent database expert, explaining why it upgraded from MySQL+Milvus to the OceanBase vector... - [Handling Hundreds of Millions of New Records Daily: How BOSS Zhipin Built a High-Performance, Efficient Storage Solution on OceanBase](https://longda.us/2025-06-30/2025-06-30-boss-zhipin-high-performance-storage/) (2025-06-30): Facing hundreds of millions of new chat-log records every day, BOSS Zhipin compared products such as MySQL and ClickHouse before choosing OceanBase to build... - [OceanBase Vector Search at Lalamove: Exploration and Practice](https://longda.us/2025-06-25/2025-06-25-huolala-oceanbase-vector-search/) (2025-06-25): Lalamove shares its exploration and practice with OceanBase vector search: starting from pain points of its existing vector database—dynamic schemas, hybrid... - [OceanBase Vector Technology Tackles 360's Three Commercialization Pain Points, Accelerating AI-Driven Business Analytics by 80%](https://longda.us/2025-06-23/2025-06-23-360-oceanbase-vector-technology/) (2025-06-23): 360's Commercialization business line shares the application of OceanBase in scenarios such as real-time advertising reports and vector storage, solving... - [Zhihu's Large-Scale OceanBase Adoption and Joint Ecosystem Building](https://longda.us/2025-06-18/2025-06-18-zhihu-oceanbase-practice/) (2025-06-18): Zhihu's database lead shares the journey of deploying OceanBase in Zhihu's core scenarios, including multi-tenant isolation, the introduction of OBKV, the... - [NetEase Games Brings OceanBase into Its DB SaaS: Storage Cost Cut by 60%, Backup and Recovery 3x Faster](https://longda.us/2025-06-12/2025-06-12-netease-game-db-saas-oceanbase/) (2025-06-12): The NetEase Games DB SaaS platform brought in the OceanBase distributed database to address pain points such as high concurrency, data synchronization, and... - [Conquering the \"Four Mountains\": Qingdao Yuno's Distributed Database Upgrade Strategy on OceanBase for Pharma Retail](https://longda.us/2025-05-27/2025-05-27-pharma-retail-distributed-database/) (2025-05-27): Qingdao Yuno's journey of digital transformation in pharma retail: migrating from traditional databases to OceanBase to overcome architecture flexibility,... ### Miscellaneous (19) - [HashCorp Reading Notes](https://longda.us/2022-02-28/hashcorp-read-notes/) (2022-02-28): Reflections on a 10,000-word article about HashiCorp's open-source commercialization: thoughts on open source vs. enterprise tiers, channel partnerships,... - [My Tesla Suddenly Lost Power While Driving](https://longda.us/2022-02-26/tesla-is-bullshit/) (2022-02-26): How my Tesla suddenly lost power while driving: an accidental touch of the gear paddle disabled the front motor. A record of the fault, the remote data... - [Strolling Through Jiuzhaigou](https://longda.us/2021-10-10/jiuzhaigou/) (2021-10-10): A Jiuzhaigou travelogue: the National Day road-trip traffic jam from Chengdu to Jiuzhaigou, and a recommended walking route from Jianya to Nuorilang via the... - [My 10-Year Anniversary](https://longda.us/2020-06-07/10years/) (2020-06-07): Reflecting on a decade at Alibaba: from promising to stay five years to nearly ten. Gratitude for the platform's inclusiveness, the team's trust, and... - [The Rise of Huawei](https://longda.us/2020-04-30/huawei/) (2020-04-30): Reading notes on The Rise of Huawei: tracing the key decisions across Huawei's founding, growth, and survival phases, and reflecting on customer-first... - [A Two-Day Trip to Copenhagen](https://longda.us/2020-02-01/copenhagen/) (2020-02-01): A travelogue of a two-day trip to Copenhagen: buy the Copenhagen Card and enjoy the old town and its museums. Recommended spots include the Carlsberg... - [A Day Trip in Stockholm](https://longda.us/2020-01-30/stockholm/) (2020-01-30): A one-day trip through Stockholm on a Nordic tour: a guided visit to the City Hall and its dazzling gold-leaf Golden Hall and hand-painted Princess Hall,... - [Norway 3-Day Trip (3)](https://longda.us/2020-01-29/norway3/) (2020-01-29): A day-trip travelogue in Bergen: riding the funicular to overlook this World Heritage city, strolling the colorful wooden houses of the Hanseatic wharf,... - [Norway 3-Day Trip (2)](https://longda.us/2020-01-28/norway2/) (2020-01-28): Travelogue of the second leg of the Norway in a Nutshell tour: the train from Myrdal to Flam, the fjord cruise, and the changing winter and summer scenery... - [Norway 3-Day Trip (1)](https://longda.us/2020-01-27/norway/) (2020-01-27): A day-trip travelogue in Oslo: Vigeland Sculpture Park, the university, and the royal palace, plus the Norway in a Nutshell itinerary and tips for buying... - [A Trip to Helsinki](https://longda.us/2020-01-25/helsinki/) (2020-01-25): A one-day travelogue of Helsinki, Finland: the Sibelius Park organ sculpture, the Rock Church, the world's cheapest LV, and other Nordic culture and... - [A Trip to Rovaniemi](https://longda.us/2020-01-23/rovaniemi/) (2020-01-23): A winter travel diary of the Rovaniemi aurora trip in Finland: icebreaker cruise, aurora photography tour, and forest skiing, with Nordic Travels booking... - [New Year Wish](https://longda.us/2020-01-01/New-Year-Wish/) (2020-01-01): Reflections and a wish list for the new year 2020: looking back at last year's unfinished goals, then setting goals for the year ahead such as blogging,... - [Reflections on \"Peak\"](https://longda.us/2018-12-13/keyilianxi/) (2018-12-13): Reading notes on 'Peak': refuting the idea of innate genius and the simplistic ten-thousand-hour rule, summarizing a training method built on four elements... - [Reflections on \"Steve Jobs\"](https://longda.us/2018-10-08/qiaobusi/) (2018-10-08): Reflections on the biography 'Steve Jobs': exploring obsession versus collective wisdom, the techniques of a world-class marketing master, and how different... - [Reflections on the Cognitive Revolution](https://longda.us/2017-12-23/knowledgerevolution/) (2017-12-23): Notes on Li Shanyou's 'Cognitive Revolution' course: a walkthrough of core theories such as first principles, inductive and deductive thinking,... - [A Self-Guided Tour Around Taiwan](https://longda.us/2016-10-14/traveltaiwan/) (2016-10-14): A guide to a self-guided tour around Taiwan: handling the travel permit endorsement and entry permit, planning a half-island route, attractions in Kenting... - [A Short Talk on Job-Hopping](https://longda.us/2016-09-23/jump/) (2016-09-23): A short talk on job-hopping: analyzing the essence and trade-offs of changing jobs across dimensions such as salary, future career and company prospects,... - [Complaining About GoDaddy](https://longda.us/2016-08-10/godaddy/) (2016-08-10): A rant about GoDaddy deleting my personal hosting and wiping out five years of blog posts: a strong condemnation of their lack of accountability, plus a... ### Hands-on Practice (11) - [Vector Database Best Practices Distilled by OceanBase over Three Years](https://longda.us/2026-06-01/2026-06-01-vector-database-best-practices/) (2026-06-01): Two OceanBase vector database experts distill three years of hands-on PoC experience, systematically covering vector index selection, memory and disk... - [Stop Following the Crowd Blindly: The Core Principles Behind Seven Companies' Real-World Vector Database Choices](https://longda.us/2026-04-09/2026-04-09-vector-database-selection-principles/) (2026-04-09): This article reviews the real thinking and practice of seven companies—including Qihoo 360, China Unicom, Lalamove, Weibo, and Quwan Technology—in their... - [My Editor Job Has Been Replaced by AI — A seekdb Fork Table Capability Test Report](https://longda.us/2026-04-01/2026-04-01-seekdb-fork-table-test-report/) (2026-04-01): An experiment report on having an AI Agent automatically deploy seekdb and test its Fork Table capability. Through five scenarios, data isolation, version... - [Saving My Company $5,000 in Just Two Weekends: Refactoring a Knowledge Base from a Multi-Database Architecture to an AI-Native Database](https://longda.us/2025-12-25/2025-12-25-ai-native-database-knowledge-base-refactor/) (2025-12-25): In two weekends, the author refactored an enterprise knowledge base from a four-database stack (PostgreSQL + Elasticsearch + Pinecone + Redis) into a... - [A Guide to Using the OceanBase Vector Database](https://longda.us/2025-09-24/2025-09-24-oceanbase-vector-db-guide/) (2025-09-24): The official guide to using the OceanBase vector database: a detailed walkthrough of vector index types such as HNSW, HNSW_SQ, HNSW_BQ, IVF, and IVF_PQ,... - [Deploying the OceanBase Database in an Ubuntu Virtual Machine](https://longda.us/2025-09-19/2025-09-19-ubuntu-vm-deploy-oceanbase/) (2025-09-19): This article shares the complete process of deploying a standalone OceanBase Community Edition database via OBD's GUI in a WSL Ubuntu 22.04 virtual machine... - [A Practical Guide to Vector Databases for Personalized Recommendation in UGC Communities](https://longda.us/2025-08-25/2025-08-25-vector-db-ugc-recommendation/) (2025-08-25): A practical guide to building a personalized recommendation system for UGC communities on OceanBase's native vector capabilities: dual-vector user interest... - [A New Open-Source Community Development Experience in the Vibe Coding Era](https://longda.us/2025-07-28/2025-07-28-vibe-coding-opensource-community/) (2025-07-28): Drawing on the real experience of an OceanBase community developer, this article shows how to use Cursor together with the OceanBase MCP Server to create... - [OBCP V4 Official Mock Exam Analysis (with Answers)](https://longda.us/2025-07-22/2025-07-22-obcp-v4-mock-exam-analysis/) (2025-07-22): This article compiles the 50 mock questions publicly available on the OBCP V4 official site—covering single-choice, multiple-choice, and true/false... - [The Evolution of OceanBase Auto-increment Columns and Best Practices](https://longda.us/2025-07-21/2025-07-21-oceanbase-auto-increment-evolution/) (2025-07-21): This article traces the evolution of OceanBase auto-increment columns from 4.0.0 to 4.2.3, compares the principles and jump behavior of the ORDER and... - [OceanBase PoC Lessons Learned (Part 2) — AP Workloads](https://longda.us/2025-07-07/2025-07-07-oceanbase-poc-ap-business/) (2025-07-07): This article summarizes hands-on experience from OceanBase AP workload PoCs, centered on business migration strategy and database object design. It covers... ### News (11) - [OceanBase Community Monthly: Kernel and AI Tool Releases, Plus Events Across China](https://longda.us/2026-08-12/2026-08-12-oceanbase-community-monthly/) (2026-08-12): August 2026 OceanBase Community Monthly: AgentSeek 0.0.5–0.1.1, V4.4.2_CE_BP2, OBD v4.5.0, 15 certifications, plus WAIC, Suzhou, and Beijing events. - [OceanBase Community Monthly: Building Agents with a Closed Data Loop](https://longda.us/2026-07-09/2026-07-09-oceanbase-community-monthly/) (2026-07-09): July 2026 OceanBase Community Monthly: PowerMem 1.1.x and AgentSeek help developers ship agents with a closed data loop, plus certifications and city events. - [Build the Data Foundation for the Agent Era: Contribute to Easy Data x AI](https://longda.us/2026-07-02/2026-07-02-easy-data-ai-course-call/) (2026-07-02): Help co-build Easy Data x AI, an open introductory course on data foundations, AI agents, retrieval, memory, and practical AI applications. - [OceanBase Community Monthly: AgentSeek Launches as seekdb Delivers a 22× Streaming Throughput Gain](https://longda.us/2026-06-10/2026-06-10-oceanbase-community-monthly-agentseek-seekdb/) (2026-06-10): OceanBase's June roundup covers seekdb 1.3.0 async indexing with 22× streaming throughput, the AgentSeek agent toolkit, and obd/obdiag upgrades. - [Shanghai Meetup Highlights: Xinye's Cost Cuts, Suanzhi Future's Hybrid Search, and AgentSeek's One-Stop Agent Engineering](https://longda.us/2026-06-03/2026-06-03-shanghai-meetup-recap/) (2026-06-03): A recap of the Shanghai Agent Infra technical salon co-hosted by OceanBase and the LangChain Community: the debut of the AgentSeek enterprise-grade agent... - [OceanBase Community Monthly: Major Updates to PowerMem, OMS, and obdiag](https://longda.us/2026-05-21/2026-05-21-oceanbase-community-monthly-2026-05/) (2026-05-21): OceanBase Community Monthly for May 2026: PowerMem v1.0.0 integrates pyseekdb for embedded vector storage, OMS V4.2.13-CE adds ES, MongoDB, and ClickHouse... - [Shanghai, Here We Come! On 5/30, OceanBase × LangChain Join Forces to Debut \"AgentSeek\" and Define a New Paradigm for Enterprise Agent Development](https://longda.us/2026-05-13/2026-05-13-shanghai-oceanbase-langchain-meetup-preview/) (2026-05-13): On May 30, OceanBase teams up with the LangChain Community for an offline Meetup in Zhangjiang, Shanghai, where it will fully unveil AgentSeek, an... - [OceanBase Teams Up with Baidu ERNIE & PaddlePaddle, Qoder, and Multiple Hardware Vendors to Explore Production-Grade Agent Deployment](https://longda.us/2026-04-25/2026-04-25-oceanbase-paddle-qoder-agent-production/) (2026-04-25): On April 25, OceanBase joined forces with Baidu ERNIE & PaddlePaddle, Qoder, and several smart-hardware vendors to host the \"Storage and Compute Evolution... - [Live from the Community Carnival! Open Source, Open Ecosystem, Shared Success — a 13-Year-Old Takes Second Place in AI Coding!](https://longda.us/2026-02-06/2026-02-06-community-carnival-2026/) (2026-02-06): On January 31, the 2026 OceanBase Community Carnival was held in Shanghai, gathering over 260 developers. Through keynotes, panel discussions, AI Coding... - [Born for AI: Efficiently Build Your Agent and AI System Architecture with OceanBase seekdb](https://longda.us/2025-12-03/2025-12-03-seekdb-agent-ai-architecture/) (2025-12-03): After open sourcing its AI-native database seekdb, OceanBase launched a writing contest with prizes, inviting developers to deploy and experience seekdb, or... - [A Recap of the Hands-on AI Workshop at the OceanBase Annual Conference](https://longda.us/2025-11-28/2025-11-28-oceanbase-handson-ai-workshop/) (2025-11-28): A recap of the Hands-on AI Workshop at the OceanBase Annual Conference: hundreds of developers, guided by experts from LangChain, Dify, and OceanBase,... ### Product Deep Dive (11) - [Why OceanBase Built Lakebase](https://longda.us/2026-07-23/2026-07-23-why-we-build-lakebase/) (2026-07-23): Yanran (Han Fusheng) explains why OceanBase built Lakebase to unify multimodal data, hybrid search, and agent-ready access for enterprises. - [Designing a Lakehouse AI Database for Production Agents](https://longda.us/2026-07-08/2026-07-08-lakehouse-ai-database-design/) (2026-07-08): OceanBase CTO Rizhao (Yang Chuanhui) explains Lakebase, a lakehouse AI database for multimodal data, open compute, and production agents. - [OceanBase seekdb 1.3.0 Released: 22x Performance Gain, Jitter-Free P99](https://longda.us/2026-06-09/2026-06-09-seekdb-1-3-0-release/) (2026-06-09): OceanBase seekdb 1.3.0 is here, introducing an asynchronous index model based on Change Stream that decouples writes from index building. In streaming... - [seekdb 1.2.0 Released: Primary-Standby Disaster Recovery Goes Live, and Full-Database Cloning in Seconds Is Here](https://longda.us/2026-04-03/2026-04-03-seekdb-1-2-0-release/) (2026-04-03): seekdb 1.2.0 is officially released, bringing its first high-availability solution—a primary-standby asynchronous replication architecture supporting both... - [Giving OpenClaw Long-Term Memory — PowerMem 1.0.0 Officially Released](https://longda.us/2026-03-19/2026-03-19-powermem-1-0-0-release/) (2026-03-19): OceanBase's open-source intelligent memory system PowerMem 1.0.0 is officially released: a new pmem CLI operations plane and a Dashboard cognition plane,... - [From Vibe Coding to AI Agents — OceanBase seekdb Builds a Millisecond-Level Data Sandbox for the AI Era](https://longda.us/2026-03-03/2026-03-03-seekdb-ai-data-sandbox/) (2026-03-03): OceanBase seekdb 1.1.0 introduces the Fork Table feature. Based on copy-on-write and consistent snapshots, it creates logically independent,... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 2)](https://longda.us/2026-01-29/2026-01-29-unified-ai-data-stack-part2/) (2026-01-29): This article analyzes RAG's architectural evolution from Naive and Advanced to Modular RAG and its production pain points, and introduces PowerRAG — an... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 1)](https://longda.us/2026-01-28/2026-01-28-unified-ai-data-stack-part1/) (2026-01-28): This article dissects the new database needs and pain points developers face in the AI era, and introduces OceanBase seekdb — a lightweight, multimodal,... - [A Deep Dive into the OceanBase Ecosystem Toolchain — OAT / obd / OCP / obshell](https://longda.us/2026-01-08/2026-01-08-oceanbase-ecosystem-tools/) (2026-01-08): Zhimin, the product owner for OceanBase ecosystem tools, takes a deep dive into the roles and relationships of the four operations and management tools —... - [A Developer's View of OceanBase's Open-Source AI Product Trio](https://longda.us/2025-12-26/2025-12-26-oceanbase-ai-products-developer-view/) (2025-12-26): An OceanBase engineer offers a developer's take on three open-source AI products—seekdb, PowerRAG, and PowerMem—dissecting the three big challenges of the... - [In the AI Era, Why Did OceanBase Open Source an AI-Native Database Like seekdb?](https://longda.us/2025-11-26/2025-11-26-why-oceanbase-opensource-seekdb/) (2025-11-26): Feng Zhongyan (Lao Ji), General Manager of OceanBase's Open Source Ecosystem, systematically answers three questions—why seekdb was open sourced, how it... ### Industry Insights (9) - [When AI Agents Wipe Databases, Databases Learn from Git](https://longda.us/2026-08-31/2026-08-31-agent-deletes-database-git/) (2026-08-31): After a Replit agent wiped production during a code freeze, Git-like database branches emerged as a safer way to isolate AI agent changes. - [Is AI Giving Rise to 'Marxism' in the Tech Industry?](https://longda.us/2026-08-10/2026-08-10-ai-marxism-socialism/) (2026-08-10): Palantir CEO Alex Karp called the AI industry Marxist. The real issue is who owns prompts, workflows, and memory when firms use models. - [LangChain \"Goes Off-Script\" and Builds a Database from Scratch?](https://longda.us/2026-05-18/2026-05-18-langchain-builds-database/) (2026-05-18): To solve the problem of exploding Agent trace data in LangSmith, LangChain built a distributed database, SmithDB, from scratch. This article unpacks its... - [7 Million People Watch AI Wipe a Database, and the Culprit Writes a Bizarre Confession](https://longda.us/2026-05-09/2026-05-09-ai-deletes-database-incident/) (2026-05-09): PocketOS's AI Agent, running in Cursor + Claude Opus, unilaterally deleted the Railway production database and its backups, causing an incident in 9 seconds... - [DeepMind CEO Interview: We're Just 4 Years and 3 Final Puzzle Pieces Away from AGI](https://longda.us/2026-05-09/2026-05-09-deepmind-ceo-agi-interview/) (2026-05-09): In a recent interview, Google DeepMind CEO Demis Hassabis predicts AGI could arrive by 2030 and pinpoints AI's three biggest gaps today: continual learning,... - [Talking with AI: How Do You Survive the AI Chaos?](https://longda.us/2026-04-25/2026-04-25-surviving-ai-era-conversation/) (2026-04-25): A survival guide distilled from a conversation with AI—covering the logic of big-tech layoffs, the predicament at each level from P6 to P9, a four-layer... - [Developers Cheer, Ordinary People Are Lost: After OpenClaw, Which Way for 'Usable AI'?](https://longda.us/2026-02-11/2026-02-11-usable-ai-after-openclaw/) (2026-02-11): Compiled from a panel discussion at the OceanBase Community Carnival, where guests from Eigent, Ant Bailing, Fellou, and others discuss the OpenClaw... - [Skills Arrive — Is Prompt Dead? In 2026, How Do We Build Controllable Thinking for Agents?](https://longda.us/2026-02-07/2026-02-07-skills-vs-prompt-agent-thinking/) (2026-02-07): A panel transcript from the OceanBase Community Carnival: experts from RAGFlow, FastGPT, Nowledge Labs, and OceanBase discuss where the RAG ecosystem is... - [Data-Driven Innovation and Transformation in the Pan-Internet Industry, and New Opportunities for Databases](https://longda.us/2025-06-16/2025-06-16-pan-internet-innovation-database-opportunities/) (2025-06-16): An exploration of how data-driven change is transforming the pan-internet industry and the new opportunities this creates for databases, covering technical... ### User Practices (1) - [Migrating from HBase to OceanBase: The Ultimate Solution for Real-Time Data Writes with Flink](https://longda.us/2026-04-24/2026-04-24-hbase-to-oceanbase-flink-migration/) (2026-04-24): This article introduces a real-time data-write solution based on Flink and OceanBase OBKV-HBase—fully compatible with the HBase API, supporting buffered... ## Full Article Index > Auto-generated list of all 180 articles, grouped by category and newest first within each. Each entry links to the canonical page; plain-text bodies live in /llms-full.txt. ### AI Applications (44) - [From Whispers to the Bulletin Board: Multi-Agent Memory Isolation in Action](https://longda.us/2026-08-03/2026-08-03-multi-agent-memory-isolation-game/) (2026-08-03): A PowerMem and seekdb game shows how multi-agent memory remains isolated until an operator publishes a private card to a shared bulletin board. - [After WAIC, I Stopped Believing in the Omnipotent Agent](https://longda.us/2026-07-28/2026-07-28-waic-not-omnipotent-agent/) (2026-07-28): WAIC field notes show that agents create value in bounded use cases—with ontology, live data, DRIs, and on-device memory—not as all-purpose generalists. - [Graph Engineering: Don't Let One Agent Be Both Player and Referee](https://longda.us/2026-07-27/2026-07-27-graph-engineering-agent-roles/) (2026-07-27): Graph Engineering does not replace the agent loop. It separates execution, validation, and direction so one agent does not judge its own work. - [Designing AI Memory Systems: Architecture and Engineering Practice](https://longda.us/2026-07-21/2026-07-21-ai-memory-system-architecture/) (2026-07-21): An architectural view of AI memory as a Memory OS built on a Raw Ledger, Views, and Policy, followed by a practical implementation in PowerMem. - [What Should a Database Become When AI Agents Start Using It?](https://longda.us/2026-07-06/2026-07-06-agent-database-oceanbase-lakebase/) (2026-07-06): An editorial look at OceanBase Lakebase, seekdb, and PowerMem for AI-agent data, hybrid retrieval, safe experimentation, and long-term memory. - [Evaluating GLM-5.2 on Long-Horizon Tasks: PowerMem Python-to-TypeScript SDK Alignment](https://longda.us/2026-06-29/2026-06-29-glm-powermem-typescript-evaluation/) (2026-06-29): A seven-round GLM-5.2 evaluation of PowerMem Python-to-TypeScript SDK alignment, testing long-horizon engineering discipline beyond context length. - [Predicting the 2026 World Cup with seekdb: Data Modeling to Probability Simulation](https://longda.us/2026-06-22/2026-06-22-seekdb-world-cup-monte-carlo/) (2026-06-22): Build a 2026 FIFA World Cup Monte Carlo demonstration in seekdb with Elo ratings, Poisson goal models, and SQL stored procedures. - [PowerMem Quick Start: Building a Self-Evolving Agent Memory Layer](https://longda.us/2026-06-12/2026-06-12-powermem-quick-start/) (2026-06-12): Install PowerMem on Linux, open the Dashboard, then connect Claude Code and OpenClaw for cross-session Agent memory with self-evolving recall. - [How to Combine PaddleOCR with OceanBase to Achieve the First Mile of Enterprise Asset Intelligence](https://longda.us/2026-06-05/2026-06-05-paddleocr-oceanbase-asset-intelligence/) (2026-06-05): From Yang Youzhi of Baidu's PaddlePaddle AI Studio community, this article explains how to use PaddleOCR-VL-1.6 to parse unstructured enterprise documents... - [Building an Agent System Solution on OceanBase & LangChain to Get Agents into Production Fast](https://longda.us/2026-06-02/2026-06-02-oceanbase-langchain-agent-solution/) (2026-06-02): At the Shanghai Meetup, LangChain & OceanBase community ambassador Canghai Jiusu unveiled AgentSeek — an agent engineering toolkit built on OceanBase and... - [LangChain's Crash Course? Using the Harness to Explain the Value and Practice of an All-in-one Data Foundation](https://longda.us/2026-05-26/2026-05-26-langchain-harness-allinone-data-base/) (2026-05-26): Starting from the definition and layered structure of the Harness, and drawing on the plugin-based design of the open-source project Bub and the Tape... - [The OceanBase Community Opens Up Its Skill Universe!](https://longda.us/2026-05-22/2026-05-22-oceanbase-community-skill-universe/) (2026-05-22): The OceanBase community open-sources the oceanbase-skills repository, debuting deployment and operations Skills that let an AI Agent handle cluster... - [Why Is Your Token Consumption So High? Money-Saving Tricks with OpenClaw](https://longda.us/2026-05-08/2026-05-08-openclaw-token-cost-saving/) (2026-05-08): OpenClaw's full-load MEMORY.md and lossy compaction are two big token black holes. seekdb M0 uses on-demand retrieval of cloud memory, rule-based... - [How Do You Write a Workflow Skill? Patterns and Best Practices Distilled from 7 Top-Tier Projects](https://longda.us/2026-04-27/2026-04-27-workflow-skill-best-practices/) (2026-04-27): This article analyzes line by line 7 production-grade Skills from teams such as OpenAI, Google Labs, obra, and Trail of Bits, distilling 5 workflow Skill... - [Token, Harness, OpenClaw, RAG, MCP, Agent—How Do They All Relate? One Diagram Makes It Clear](https://longda.us/2026-04-16/2026-04-16-ai-concepts-relationship-diagram/) (2026-04-16): Using the real task of \"generating a new-product R&D slide deck with data charts,\" this article walks through the relationships and division of labor among... - [bubseek — Turning an Agent's Footprints into Team Insights](https://longda.us/2026-04-15/2026-04-15-bubseek-agent-insights/) (2026-04-15): bubseek is a self-driven insight Agent built on the bub framework and OceanBase seekdb. With just a single prompt, it can autonomously connect to data... - [Say Goodbye to Losing OpenClaw Configs—Mindkeeper Beta Invitation](https://longda.us/2026-04-10/2026-04-10-mindkeeper-beta-invitation/) (2026-04-10): Mindkeeper is a version management tool built specifically for AI Agent configuration files. Using a shadow Git repository, it automatically tracks every... - [OpenClaw Ships Yet Another Release — How to Track Every Second of Its Spend in Real Time and Open the Agent \"Thinking\" Black Box](https://longda.us/2026-03-24/2026-03-24-openclaw-cost-tracking/) (2026-03-24): After OpenClaw's new release, the compute consumption of parallel multi-Agent and long-horizon tasks is harder to control. The open-source tool ClawProbe... - [Why Does OpenClaw Get Better the More You Use It?](https://longda.us/2026-03-18/2026-03-18-why-openclaw-gets-better/) (2026-03-18): A deep look at the essence of OpenClaw \"getting better the more you use it\": through a read-write loop over md data files such as... - [OpenClaw in Practice: One Mac, Six Agents, the Engineering Journey from \"Chatting\" to \"Getting Work Done\"](https://longda.us/2026-03-11/2026-03-11-openclaw-mac-six-agents/) (2026-03-11): On a single Mac, the author uses OpenClaw to build a multi-Agent team of one orchestrator plus five specialist Agents, with 52 cron jobs rotating around the... - [OpenClaw + seekdb skills: Build Your Own Personal seekdb Assistant](https://longda.us/2026-03-04/2026-03-04-openclaw-seekdb-skills-assistant/) (2026-03-04): This article explains how to install seekdb Agent Skills in the personal AI assistant OpenClaw via pip or ClawHub, load the seekdb official documentation... - [EchoKit × OceanBase seekdb: An Open-Source, Localized Voice AI Framework](https://longda.us/2026-02-27/2026-02-27-echokit-seekdb-voice-ai/) (2026-02-27): EchoKit is a Rust-based voice AI framework open-sourced by the WasmEdge team. It supports local deployment and modular replacement of ASR/LLM/TTS, and... - [Building Persistent Memory for an AI Agent With seekdb: From \"Full Context\" to \"Precise Recall\"](https://longda.us/2026-02-26/2026-02-26-seekdb-agent-persistent-memory/) (2026-02-26): This article explains how to build a vectorized persistent memory system for a Node.js AI Agent based on the seekdb-js SDK and Qwen3 Max (via OpenRouter),... - [uv × pyseekdb: Driving the Cost of a RAG Environment and Retrieval to a Minimum](https://longda.us/2026-02-13/2026-02-13-uv-pyseekdb-rag-setup/) (2026-02-13): This article introduces the combination of two tools, uv and pyseekdb. uv solves Python environment reproducibility with pyproject.toml and uv.lock, while... - [Vibe Coding Notes — Google AI Studio](https://longda.us/2026-01-23/2026-01-23-vibe-coding-google-ai-studio/) (2026-01-23): A look at how to do Vibe Coding with the token-free Google AI Studio: through just four natural-language exchanges, we build a zero-code AI app that turns a... - [Master the AI-Native Database with Natural Language — the seekdb MCP Server](https://longda.us/2026-01-22/2026-01-22-seekdb-mcp-server/) (2026-01-22): This article explains how to install and configure the seekdb MCP Server, covering both embedded and client/server deployment modes and the Stdio and SSE... - [Help the Cursor AI Assistant Instantly Get Vector Databases — A Guide to the Cursor seekdb Extension](https://longda.us/2026-01-14/2026-01-14-cursor-seekdb-extension-guide/) (2026-01-14): This article explains how to install and use the seekdb Cursor Extension to inject seekdb's official documentation into the .cursor/rules directory, giving... - [Hybrid Search: A Hands-on Guide to Multimodal Retrieval (Chapter 4)](https://longda.us/2026-01-09/2026-01-09-hybrid-search-multimodal-guide/) (2026-01-09): This is Chapter 4 of the Agentic RAG series. It explains in detail how Hybrid Search fuses three modalities — vector search, sparse search, and full-text... - [A Spoon-Fed Tutorial (Bonus Edition) — Deploying Dify on K8s](https://longda.us/2026-01-04/2026-01-04-dify-on-k8s-tutorial/) (2026-01-04): This is the bonus, spoon-fed tutorial in the \"Dify x OceanBase seekdb\" series. It demonstrates how to deploy Dify—using seekdb as both its metadata database... - [A Step-by-Step Tutorial II — A Guide to Using Dify x OceanBase seekdb](https://longda.us/2025-12-11/2025-12-11-dify-oceanbase-seekdb-guide/) (2025-12-11): A step-by-step tutorial detailing how to configure OceanBase seekdb as both the metadata database and the vector database in Dify v1.10.1, replacing a... - [Building an Intelligent Book Search App from Scratch with seekdb](https://longda.us/2025-12-10/2025-12-10-seekdb-book-search-app/) (2025-12-10): Using an intelligent book search app as an example, this article walks you hands-on through data import, vector embedding, and HNSW index creation with... - [A Step-by-Step Tutorial — Building a RAG Application with OceanBase seekdb](https://longda.us/2025-12-05/2025-12-05-seekdb-rag-tutorial/) (2025-12-05): This is a step-by-step tutorial that walks you hands-on through building a RAG (Retrieval-Augmented Generation) system with OceanBase seekdb, covering the... - [Explaining DeepSeek-OCR in the Plainest Language — The Disruptive Idea of Optical Context Compression](https://longda.us/2025-10-31/2025-10-31-deepseek-ocr-jinghua/) (2025-10-31): An in-depth reading of the disruptive idea behind the DeepSeek-OCR paper — optical context compression. It explores how to use pixels instead of text as LLM... - [Exploring How AI Reshapes Database Products — obloader agent and OceanBase Agent](https://longda.us/2025-10-13/2025-10-11-ai-gaibian-shujuku-chanpin/) (2025-10-13): Exploring a new form of combining AI with database products. This article introduces how the obloader agent simplifies the use of data-loading tools through... - [Code Indexing in Practice in the Age of AI Coding](https://longda.us/2025-08-22/2025-08-22-ai-coding-code-index/) (2025-08-22): This article traces the four leaps of code search — from text matching to semantic retrieval, graph indexing, and agentic search — and shares hands-on... - [A Step-by-Step Guide to Building an Agent with ModelScope x OceanBase MCP](https://longda.us/2025-08-15/2025-08-15-modelscope-oceanbase-mcp-agent/) (2025-08-15): OceanBase and ModelScope jointly introduce a new paradigm for AI-driven intelligent database management. Through MCP, developers can create, run, manage,... - [Dify + OceanBase: Multi-Scenario Practice for Landing AI Workloads](https://longda.us/2025-08-12/2025-08-12-dify-oceanbase-ai-multi-scenario/) (2025-08-12): This article shares the practice of choosing Dify on OceanBase to build AI applications, using OceanBase to consolidate PostgreSQL, Redis, and Weaviate into... - [Context Engineering: A Code Documentation Retrieval Engine Built on OceanBase](https://longda.us/2025-08-08/2025-08-08-context-engineering-code-doc-retrieval/) (2025-08-08): Doc2Dev builds a code documentation retrieval engine on the OceanBase vector database, providing AI coding assistants with up-to-date documentation through... - [Say Goodbye to Tedious Manual Analysis—OceanBase Agent Makes Database Operations Easy!](https://longda.us/2025-08-04/2025-08-04-oceanbase-agent-database-ops/) (2025-08-04): OceanBase Agent leverages large models to simplify daily database operations. With 70+ built-in SQL tools, support for custom Tools, Playbook task flows,... - [Agentic AI, Built on Dify x OceanBase in Practice](https://longda.us/2025-08-01/2025-08-01-agentic-ai-dify-oceanbase/) (2025-08-01): A core Dify contributor unpacks the Agentic AI trend and the platform capabilities it demands, introduces how OceanBase provides one-stop support for Dify... - [AI Replacing the Traditional GUI: An OBCloud Workflow Based on MCP](https://longda.us/2025-07-24/2025-07-24-mcp-obcloud-workflow/) (2025-07-24): Traditional database operations require clicking through the console level by level and repeatedly consulting documentation—slow and inefficient. From a... - [Hands-On: Building an MCP Advisor on OceanBase](https://longda.us/2025-07-11/2025-07-11-oceanbase-mcp-advisor/) (2025-07-11): Faced with the challenges of dynamic planning, service discovery, and usage complexity brought by tens of thousands of MCP tools, Ant Group Agent engineer... - [Dify + OceanBase + MCP: A Trio That Makes Building RAG Applications Easy](https://longda.us/2025-07-10/2025-07-10-dify-oceanbase-mcp-rag/) (2025-07-10): Through a hands-on case study, this article shows how to use Dify, OceanBase, and MCP to build a fully functional RAG application from scratch. It covers... - [AI Application Development: An Innovative Unstructured Document Analysis System That Avoids the Limitations of Traditional Approaches](https://longda.us/2025-07-04/2025-07-04-ai-app-unstructured-document-analysis/) (2025-07-04): A team from Beijing Institute of Technology built QUEST, an intelligent unstructured document analysis system on OceanBase. Through sampling-based... ### Technical Deep Dive (44) - [An OceanBase Backup Mystery: Who Cleaned Up My Backup Data?](https://longda.us/2026-06-15/2026-06-15-oceanbase-backup-cleanup-case/) (2026-06-15): An OceanBase backup cleanup case study: how full, incremental, and log backups link into recovery chains—and why directories disappear on schedule. - [A Message's Lifecycle in PowerMem: From Ingestion to Forgetting](https://longda.us/2026-06-12/2026-06-12-powermem-message-lifecycle/) (2026-06-12): Follow a meeting reminder through PowerMem's agent memory lifecycle: six-dimension importance scoring, tier placement, spaced review, retrieval ranking, and... - [From Neurons to Code Engineering: The Forgetting Design of the PowerMem Memory System](https://longda.us/2026-06-08/2026-06-08-powermem-forgetting-design/) (2026-06-08): Starting from synaptic plasticity, memory consolidation, information theory, and the Ebbinghaus forgetting curve, this article unpacks the forgetting... - [A Deep \"Dissection\" of the AI Agent Harness](https://longda.us/2026-05-25/2026-05-25-ai-agent-harness-deep-dive/) (2026-05-25): This article introduces Akshay Pachaar's long-form piece \"The Anatomy of an Agent Harness,\" systematically breaking down the Agent Harness architectures of... - [A Deep Dive into LLM Wiki / Obsidian-Wiki / GBrain: The \"Self-Organization\" and \"Self-Evolution\" of Knowledge in the Agent Era](https://longda.us/2026-04-28/2026-04-28-llm-wiki-knowledge-self-organization/) (2026-04-28): From a knowledge-engineering perspective, this article dissects the designs of Karpathy's LLM Wiki, Obsidian-Wiki, and GBrain, analyzing the... - [How Agent / Skills / Teams Architectures Evolve, and How to Choose Among Them](https://longda.us/2026-03-10/2026-03-10-agent-skills-teams-architecture-evolution/) (2026-03-10): This article traces the evolution of Agent architectures from Single Agent and Multi-Agent to Agent Skills and Agent Teams. Drawing on a Google DeepMind... - [How Does OpenClaw Make AI Feel \"Human\"?](https://longda.us/2026-02-25/2026-02-25-openclaw-humanlike-ai/) (2026-02-25): This article takes the form of study notes to unpack the engineering mechanisms OpenClaw uses to make AI feel \"human\" — live context assembled at runtime,... - [A Guide to Optimizing Vector Indexes in OceanBase](https://longda.us/2025-12-19/2025-12-19-oceanbase-vector-index-optimization/) (2025-12-19): Xia Jin, a vector-index engineer on OceanBase, takes a deep dive into how OceanBase / seekdb vector indexes are built and the structure of their five... - [The Mystery of OceanBase Session IDs](https://longda.us/2025-11-21/2025-11-21-oceanbase-session-id-mystery/) (2025-11-21): This article systematically untangles the design logic of Session IDs in OceanBase. The two connection types — C connections and S connections — correspond... - [Explaining AI Memory in the Plainest Possible Language](https://longda.us/2025-11-18/2025-11-18-ai-memory-explained/) (2025-11-18): This article explains AI Memory in plain language. Starting from how the human brain classifies and operates on memory, it compares the storage areas and... - [OceanBase Partitioning Fundamentals](https://longda.us/2025-11-14/2025-11-14-oceanbase-partition-basics/) (2025-11-14): A systematic introduction to OceanBase partitioning fundamentals, covering the role of partitioning in partition pruning, data maintenance, and data... - [The Database Evolution of the AI Era — From Vectors to Hybrid Search](https://longda.us/2025-11-07/2025-11-07-database-evolution-vector-hybrid-search/) (2025-11-07): An accessible, easy-to-understand explainer. Starting from the classification of structured, semi-structured, and unstructured data, it explains why vector... - [A New Way to Tackle \"Read Amplification\" — Merge-On-Write Tables in OceanBase](https://longda.us/2025-11-06/2025-11-06-oceanbase-merge-on-write/) (2025-11-06): An introduction to the Merge-On-Write table launched in OceanBase 4.3.5. By splitting an update into delete + insert and writing the full set of columns, it... - [Key Techniques and Methods for OceanBase Database Diagnosis and Tuning](https://longda.us/2025-09-18/2025-09-18-oceanbase-diagnosis-tuning/) (2025-09-18): This article systematically reviews the fault classification and root causes of OceanBase, proposes a five-step diagnosis and tuning process—problem... - [When the Intelligent Robot Says \"Bro, the Language Just Doesn't Connect\"—How Should You, the Developer, Respond?](https://longda.us/2025-09-12/2025-09-12-ai-robot-language-developer/) (2025-09-12): When an intelligent robot cannot understand minor languages such as Thai, developers can use OceanBase's plugin mechanism to respond quickly to... - [Getting to Know ASH — Opening the Database's \"Treasure Box of Time\"](https://longda.us/2025-09-01/2025-09-01-ash-database-monitoring/) (2025-09-01): ASH (Active Session History) is the OceanBase database's \"intelligent monitoring system,\" taking a state snapshot of active sessions every second. Through... - [Safeguarding Performance in High-Concurrency Scenarios with OceanBase](https://longda.us/2025-08-26/2025-08-26-oceanbase-high-concurrency-performance/) (2025-08-26): From the design of kernel components — plan management, concurrency control, multi-dimensional caching, hot-row optimization, log aggregation, and... - [Hybrid Query Methods for Vector Indexes — Did You Pick the Right One?](https://longda.us/2025-08-19/2025-08-19-vector-index-hybrid-query/) (2025-08-19): This article explains the principles and usage of hybrid queries on OceanBase vector indexes, including how to choose among the three scalar-filtering... - [Automatic Partition Splitting — An Epic Usability Upgrade for OceanBase](https://longda.us/2025-08-11/2025-08-11-oceanbase-auto-partition-split/) (2025-08-11): A deep dive into OceanBase's automatic partition splitting feature: the pain points of manual partitioning, the principles, characteristics, applicable... - [OceanBase: How Does It Achieve Extreme Cost Reduction Across Hardware, Storage, and Operations?](https://longda.us/2025-07-29/2025-07-29-extreme-cost-reduction-analysis/) (2025-07-29): This article takes a deep dive into the core technologies behind OceanBase's extreme cost reduction across hardware, storage, and operations, including its... - [When OceanBase on K8s Meets AI — A Deep Dive into the Design of okctl-mcp-server](https://longda.us/2025-07-18/2025-07-18-okctl-mcp-server-design/) (2025-07-18): In this article, OceanBase community contributor Li Ziyi takes a deep dive into the design of okctl-mcp-server, explaining how the MCP protocol lets AI... - [The Architecture Design and Optimization of OceanBase's Standalone-Distributed Integrated Database](https://longda.us/2025-07-08/2025-07-08-standalone-distributed-integrated-database/) (2025-07-08): Zhifeng Yang, General Manager and Chief Architect of the OceanBase product, offers a technical interpretation of the standalone-distributed integrated... - [Using OpenManus to Build an Auto-Diagnosis Agent: Pinpoint Database Anomalies in 30 Minutes](https://longda.us/2025-06-27/2025-06-27-openmanus-diagnostic-agent/) (2025-06-27): Building a database auto-diagnosis Agent based on the OpenManus framework to quickly pinpoint database anomalies in 30 minutes, including the complete... - [OceanBase Vector Database Boosts AI Retrieval Efficiency by 45x and Halves AI Agent Development Costs](https://longda.us/2025-06-26/2025-06-26-oceanbase-vector-db-ai-search/) (2025-06-26): A comprehensive look at OceanBase 4.3's vector database capabilities, supporting HNSW indexes, hybrid search, and multimodal vectors, boosting AI retrieval... - [LLM vs. Small Models: The Right Way to Build an AI Agent for Domestic Database Operations](https://longda.us/2025-06-20/2025-06-20-ai-agent-database-ops/) (2025-06-20): Exploring how to use small models instead of full-scale LLMs for intelligent operations on domestic databases, enhancing reasoning ability through context,... - [How Database Technology and Solutions Support the Data Needs of the Pan-Internet Industry](https://longda.us/2025-05-30/2025-05-30-database-technology-support-pan-inter-industry/) (2025-05-30): Driven by the digital economy, this article explores how the pan-internet industry copes with the systemic challenges of exponential data growth. It... - [A Quick Introduction to Vector Databases](https://longda.us/2025-05-25/2025-05-25-vector-database-example/) (2025-05-25): A gentle introduction to vector database fundamentals: Embedding techniques, similarity metrics, search algorithms (HNSW, IVF, DiskANN), and index... - [Integrating OceanBase Monitoring with Prometheus/Grafana](https://longda.us/2021-11-21/obagent/) (2021-11-21): OceanBase Getting Started -- Integrating OceanBase Monitoring with Prometheus/Grafana This article explains the key context, decisions, and practical takeaways. - [OceanBase Offline Installation](https://longda.us/2021-11-20/ob_offline_install/) (2021-11-20): A guide to the offline installation of an OceanBase distributed three-replica cluster, covering passwordless SSH, disk planning, deploying OBServer/OBProxy... - [OceanBase Developer Handbook, Part 5: How to Debug OceanBase](https://longda.us/2021-11-11/debug_ob/) (2021-11-11): OceanBase Developer Handbook, Part 5: How to Debug OceanBase This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation](https://longda.us/2021-11-10/modify_ob_docs/) (2021-11-10): OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor](https://longda.us/2021-10-30/contribute_to_ob/) (2021-10-30): OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment](https://longda.us/2021-10-23/set_ide/) (2021-10-23): OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code](https://longda.us/2021-10-16/build_ob/) (2021-10-16): OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code This article explains the key context, decisions, and practical takeaways. - [Disk Performance Testing](https://longda.us/2020-07-12/fileio/) (2020-07-12): Using sysbench to compare the I/O performance of Alibaba Cloud ESSD, SSD cloud disks, and local NVMe disks, covering the test script parameters and the... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc](https://longda.us/2020-07-05/tpcc/) (2020-07-05): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc This article explains the key context, decisions,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench](https://longda.us/2020-06-28/sysbench/) (2020-06-28): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench This article explains the key context,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH](https://longda.us/2020-06-22/TPCH/) (2020-06-22): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH This article explains the key context, decisions,... - [A Detailed Analysis of filesort](https://longda.us/2020-06-21/mysql-filesort/) (2020-06-21): Notes on the MySQL filesort sorting mechanism: comparing the original and modified algorithms, the meaning of max_sort_length, and how the sort/addon fields... - [An Introduction to Clustered Indexes](https://longda.us/2020-06-14/mysql-cluster-index/) (2020-06-14): Notes on MySQL clustered and non-clustered indexes: InnoDB's primary-key-clustered storage, the advantages of covering indexes, and a comparison with... - [Spanner: Google’s Globally Distributed Database](https://longda.us/2019-11-05/spanner/) (2019-11-05): Reading notes on the Google Spanner globally distributed database paper: TrueTime, Paxos, and externally consistent transactions. - [Getting Started with Scala](https://longda.us/2016-08-24/scala-start/) (2016-08-24): Notes on getting started with Scala: the interpreter, val/var variables, functions and the Unit type, the foreach syntactic sugar, arrays, side effects, and... - [Scala Overview](https://longda.us/2016-08-23/scala-general/) (2016-08-23): Overview of the Scala language: a statically typed JVM language that blends object-oriented and functional programming, introducing the Actor concurrency... - [Scaling Out ZooKeeper](https://longda.us/2015-09-10/zookeeper-enlarge/) (2015-09-10): A hands-on guide to scaling ZooKeeper across data centers in the same city: expanding a single-DC three-node cluster into a 2-2-1 layout, adding nodes step... ### Enterprise Cases (30) - [Behind a 200x SQL Speedup: How Dewu Tuned OceanBase Execution Plans and Hints](https://longda.us/2026-07-15/2026-07-15-dewu-oceanbase-sql-hint-tuning/) (2026-07-15): At Dewu, OceanBase plan-cache reuse, partition pruning, columnar indexes, parallel execution, and Hints cut a complex SQL from 4s to 0.02s—about 200x. - [Suanzhi Future Builds an OceanBase Hybrid Search Foundation for Life-Science AI Data Synthesis](https://longda.us/2026-07-01/2026-07-01-life-science-hybrid-search/) (2026-07-01): How Suanzhi Future is building an OceanBase hybrid-search foundation for life-science AI data synthesis, combining exact lookup, full-text retrieval, and... - [Xinye Technology's OceanBase Practice: From Risk-Control Core to an AI Data Foundation](https://longda.us/2026-06-25/2026-06-25-xinye-oceanbase-practice/) (2026-06-25): How Xinye Technology uses OceanBase for risk control, data archiving, high availability, multitenancy, and an AI-ready data foundation. - [NetEase Open-Sources lb-driver: Driver-Layer Load Balancing for OceanBase OBProxy](https://longda.us/2026-05-12/2026-05-12-netease-lb-driver-obproxy-load-balancing/) (2026-05-12): After migrating its core business from the DDB sharding middleware to OceanBase, NetEase Yunxin built and open-sourced lb-driver to eliminate the link... - [More Than Just Replacing HBase: How Baofu Payment Leveraged OceanBase to Build a Future-Ready, Unified 'TP+AP+KV+AI' Data Foundation](https://longda.us/2026-01-21/2026-01-21-baofu-payment-oceanbase-unified-data-base/) (2026-01-21): The Baofu Payment data team shares its complete practice of replacing HBase with OceanBase's OBKV-HBase — from architectural pain points and selection... - [Tens of Millions of Members, Billions of Transactions: When the CRM System Buckles, How Did a Leading Pharma Company Upgrade to OceanBase for Real-Time, Precision Marketing?](https://longda.us/2026-01-16/2026-01-16-pharma-crm-database-upgrade/) (2026-01-16): OceanBase: Facing tens of millions of members, billions of transactions, and multidimensional behavioral data, the CRM membership system of Chongqing... - [The Data Foundation for Zuoyebang's AI Business: OceanBase Vector Database Multi-cloud Deployment and Architecture Design Optimization](https://longda.us/2025-12-31/2025-12-31-zuoyebang-vector-database-multicloud/) (2025-12-31): Zuoyebang built the data foundation for its AI business on OceanBase. This article details vector database selection, cross-cloud primary-standby tenant... - [OceanBase at Didi: Large-Scale Operations Experience and New Feature Adoption](https://longda.us/2025-12-17/2025-12-17-didi-oceanbase-ops-practice/) (2025-12-17): Since 2024, Didi has used OceanBase to replace RocksDB and TokuDB. Using its ride-hailing growth service and core archive database as examples, this article... - [vivo's Domestic Database Technology Reserve: Using OceanBase to Break Through the Storage and Performance Bottlenecks of Large-Scale Data](https://longda.us/2025-11-13/2025-11-13-vivo-database-technology/) (2025-11-13): vivo's internet business introduced OceanBase to replace MySQL, covering four scenarios — data archiving, horizontal sharding, high concurrency, and HTAP —... - [Migrating from a Sharded MyCat Architecture to OceanBase | Lessons from Belle Fashion's Core Financial System Migration](https://longda.us/2025-10-31/2025-10-31-baili-mycat-qianyi-oceanbase/) (2025-10-31): Belle Fashion Group migrated its core financial system from a sharded MyCat architecture to OceanBase, achieving a 30x performance improvement, a 96.7%... - [How to Build a Mature, Stable, Cost-Effective, and Easy-to-Use AI Application — Quwan Technology's Hands-on Practice Building an Employee Assistant on OceanBase](https://longda.us/2025-10-22/2025-10-22-quwan-ai-yuangong-zhushou/) (2025-10-22): When selecting the underlying database for its custom AI assistant, Quwan Technology compared multiple vector databases and chose OceanBase. This article... - [How to Avoid Pointless Work — Qifu Technology Cuts Code-Refactoring Costs by 90% After Ditching Sharding with OceanBase](https://longda.us/2025-10-16/2025-10-16-qifu-fenkufenbiao-gaizao/) (2025-10-16): Qifu Technology adopted OceanBase to replace part of its MySQL and TiDB usage, cutting code-refactoring costs by 90%, halving storage costs, reducing... - [Migrating a Distributed Database to OceanBase — A Smooth Migration Built on NetEase Cloud Music's In-house CDC Service](https://longda.us/2025-09-25/2025-09-25-netease-music-cdc-migration-oceanbase/) (2025-09-25): NetEase Cloud Music shares how it migrated its PB-scale sharded DDB database to the native distributed database OceanBase. Built on its in-house CDC service... - [A Step-by-Step Guide to Optimizing Vector Search: A Game Company's Intelligent Customer Service and Recommendation System on OceanBase](https://longda.us/2025-09-11/2025-09-11-game-vector-search-oceanbase/) (2025-09-11): A card game company built an intelligent customer service and UGC community recommendation system on OceanBase's vector database. Through HNSW indexing,... - [NetEase Personal Mail Upgrades Its Database to OceanBase: A Dual Breakthrough in Reliability and Stability](https://longda.us/2025-09-02/2025-09-02-netease-mail-oceanbase-upgrade/) (2025-09-02): NetEase Personal Mail upgraded its sharded MySQL architecture to OceanBase. Through technology selection comparison, unique-key governance, partition and... - [Dmall and OceanBase: Achieving Full Inter-Tenant Resource Isolation and Low-Cost System Upgrades](https://longda.us/2025-08-27/2025-08-27-dmall-oceanbase-resource-isolation/) (2025-08-27): Dmall shares its hands-on experience migrating from MySQL to OceanBase in a retail SaaS scenario — using multi-tenant resource isolation, transparent... - [70% Performance Boost — CR Vanguard Upgrades Its Core Database to OceanBase](https://longda.us/2025-08-20/2025-08-20-crv-vanguard-database-upgrade/) (2025-08-20): CR Vanguard's subsidiary Wanjia Digital upgraded a middleware-based MySQL sharded cluster to OceanBase, achieving a seamless, business-transparent migration... - [Hardware Costs Down 52%: How 99Bill Reduced Costs and Boosted Efficiency After Adopting OceanBase](https://longda.us/2025-08-13/2025-08-13-99bill-oceanbase-cost-reduction/) (2025-08-13): A 99Bill DBA shares the three transformations of their DB architecture — from MySQL primary-standby and MyCAT sharding to OceanBase — detailing five... - [From v3.1 to v4.3, OceanBase Steadily Powers Kuaishou's PB-Scale Core Business Scenarios](https://longda.us/2025-08-06/2025-08-06-kuaishou-oceanbase-pb-scale/) (2025-08-06): Kuaishou migrated from MySQL sharding to OceanBase, covering PB-scale core businesses such as transaction reconciliation and payments, and upgraded from... - [Tongfang Smart Energy: OceanBase Powers a Secure, Reliable, High-Performance Energy Data Foundation](https://longda.us/2025-08-05/2025-08-05-tongfang-smart-energy-oceanbase/) (2025-08-05): After comparing HBase-Phoenix, Ignite, and TiDB for its new-energy and metro projects, Tongfang Smart Energy chose OceanBase 4.2.1, achieving twice the... - [Escaping Three Major Dilemmas, Cultivating Five Key Scenarios | How TAL Education's AI Business Cut Costs by 86% with OceanBase](https://longda.us/2025-07-30/2025-07-30-tal-ai-oceanbase-cost-reduction/) (2025-07-30): Facing three major dilemmas—sharding, resource isolation, and resource fragmentation—the TAL Education Group adopted OceanBase and deeply cultivated five... - [Weibo's Database Architecture Upgrade with OceanBase: Both Stable and Cost-Saving](https://longda.us/2025-07-23/2025-07-23-weibo-partition-table-practice/) (2025-07-23): Yang Shanggang, head of Weibo's database technology, takes a deep dive into Weibo's database architecture upgrade: replacing MySQL sharding with OceanBase... - [OceanBase: Du Xiaoman Breaks Down Database Selection Across Five Technical Scenarios, Doubling Cost Savings, Performance, and Efficiency](https://longda.us/2025-07-16/2025-07-16-duxiaoman-database-selection/) (2025-07-16): Zhao Hui, head of Du Xiaoman's Technology Committee, shares their unified storage architecture practice: selecting OceanBase based on four cost advantages... - [China Unicom's ChatDBA Upgrades Its Vector Database: A Hands-On Comparison of Milvus, Elasticsearch, and OceanBase](https://longda.us/2025-07-09/2025-07-09-china-unicom-chatdba-vector-database/) (2025-07-09): China Unicom shares the journey of building ChatDBA, its intelligent database expert, explaining why it upgraded from MySQL+Milvus to the OceanBase vector... - [Handling Hundreds of Millions of New Records Daily: How BOSS Zhipin Built a High-Performance, Efficient Storage Solution on OceanBase](https://longda.us/2025-06-30/2025-06-30-boss-zhipin-high-performance-storage/) (2025-06-30): Facing hundreds of millions of new chat-log records every day, BOSS Zhipin compared products such as MySQL and ClickHouse before choosing OceanBase to build... - [OceanBase Vector Search at Lalamove: Exploration and Practice](https://longda.us/2025-06-25/2025-06-25-huolala-oceanbase-vector-search/) (2025-06-25): Lalamove shares its exploration and practice with OceanBase vector search: starting from pain points of its existing vector database—dynamic schemas, hybrid... - [OceanBase Vector Technology Tackles 360's Three Commercialization Pain Points, Accelerating AI-Driven Business Analytics by 80%](https://longda.us/2025-06-23/2025-06-23-360-oceanbase-vector-technology/) (2025-06-23): 360's Commercialization business line shares the application of OceanBase in scenarios such as real-time advertising reports and vector storage, solving... - [Zhihu's Large-Scale OceanBase Adoption and Joint Ecosystem Building](https://longda.us/2025-06-18/2025-06-18-zhihu-oceanbase-practice/) (2025-06-18): Zhihu's database lead shares the journey of deploying OceanBase in Zhihu's core scenarios, including multi-tenant isolation, the introduction of OBKV, the... - [NetEase Games Brings OceanBase into Its DB SaaS: Storage Cost Cut by 60%, Backup and Recovery 3x Faster](https://longda.us/2025-06-12/2025-06-12-netease-game-db-saas-oceanbase/) (2025-06-12): The NetEase Games DB SaaS platform brought in the OceanBase distributed database to address pain points such as high concurrency, data synchronization, and... - [Conquering the \"Four Mountains\": Qingdao Yuno's Distributed Database Upgrade Strategy on OceanBase for Pharma Retail](https://longda.us/2025-05-27/2025-05-27-pharma-retail-distributed-database/) (2025-05-27): Qingdao Yuno's journey of digital transformation in pharma retail: migrating from traditional databases to OceanBase to overcome architecture flexibility,... ### Miscellaneous (19) - [HashCorp Reading Notes](https://longda.us/2022-02-28/hashcorp-read-notes/) (2022-02-28): Reflections on a 10,000-word article about HashiCorp's open-source commercialization: thoughts on open source vs. enterprise tiers, channel partnerships,... - [My Tesla Suddenly Lost Power While Driving](https://longda.us/2022-02-26/tesla-is-bullshit/) (2022-02-26): How my Tesla suddenly lost power while driving: an accidental touch of the gear paddle disabled the front motor. A record of the fault, the remote data... - [Strolling Through Jiuzhaigou](https://longda.us/2021-10-10/jiuzhaigou/) (2021-10-10): A Jiuzhaigou travelogue: the National Day road-trip traffic jam from Chengdu to Jiuzhaigou, and a recommended walking route from Jianya to Nuorilang via the... - [My 10-Year Anniversary](https://longda.us/2020-06-07/10years/) (2020-06-07): Reflecting on a decade at Alibaba: from promising to stay five years to nearly ten. Gratitude for the platform's inclusiveness, the team's trust, and... - [The Rise of Huawei](https://longda.us/2020-04-30/huawei/) (2020-04-30): Reading notes on The Rise of Huawei: tracing the key decisions across Huawei's founding, growth, and survival phases, and reflecting on customer-first... - [A Two-Day Trip to Copenhagen](https://longda.us/2020-02-01/copenhagen/) (2020-02-01): A travelogue of a two-day trip to Copenhagen: buy the Copenhagen Card and enjoy the old town and its museums. Recommended spots include the Carlsberg... - [A Day Trip in Stockholm](https://longda.us/2020-01-30/stockholm/) (2020-01-30): A one-day trip through Stockholm on a Nordic tour: a guided visit to the City Hall and its dazzling gold-leaf Golden Hall and hand-painted Princess Hall,... - [Norway 3-Day Trip (3)](https://longda.us/2020-01-29/norway3/) (2020-01-29): A day-trip travelogue in Bergen: riding the funicular to overlook this World Heritage city, strolling the colorful wooden houses of the Hanseatic wharf,... - [Norway 3-Day Trip (2)](https://longda.us/2020-01-28/norway2/) (2020-01-28): Travelogue of the second leg of the Norway in a Nutshell tour: the train from Myrdal to Flam, the fjord cruise, and the changing winter and summer scenery... - [Norway 3-Day Trip (1)](https://longda.us/2020-01-27/norway/) (2020-01-27): A day-trip travelogue in Oslo: Vigeland Sculpture Park, the university, and the royal palace, plus the Norway in a Nutshell itinerary and tips for buying... - [A Trip to Helsinki](https://longda.us/2020-01-25/helsinki/) (2020-01-25): A one-day travelogue of Helsinki, Finland: the Sibelius Park organ sculpture, the Rock Church, the world's cheapest LV, and other Nordic culture and... - [A Trip to Rovaniemi](https://longda.us/2020-01-23/rovaniemi/) (2020-01-23): A winter travel diary of the Rovaniemi aurora trip in Finland: icebreaker cruise, aurora photography tour, and forest skiing, with Nordic Travels booking... - [New Year Wish](https://longda.us/2020-01-01/New-Year-Wish/) (2020-01-01): Reflections and a wish list for the new year 2020: looking back at last year's unfinished goals, then setting goals for the year ahead such as blogging,... - [Reflections on \"Peak\"](https://longda.us/2018-12-13/keyilianxi/) (2018-12-13): Reading notes on 'Peak': refuting the idea of innate genius and the simplistic ten-thousand-hour rule, summarizing a training method built on four elements... - [Reflections on \"Steve Jobs\"](https://longda.us/2018-10-08/qiaobusi/) (2018-10-08): Reflections on the biography 'Steve Jobs': exploring obsession versus collective wisdom, the techniques of a world-class marketing master, and how different... - [Reflections on the Cognitive Revolution](https://longda.us/2017-12-23/knowledgerevolution/) (2017-12-23): Notes on Li Shanyou's 'Cognitive Revolution' course: a walkthrough of core theories such as first principles, inductive and deductive thinking,... - [A Self-Guided Tour Around Taiwan](https://longda.us/2016-10-14/traveltaiwan/) (2016-10-14): A guide to a self-guided tour around Taiwan: handling the travel permit endorsement and entry permit, planning a half-island route, attractions in Kenting... - [A Short Talk on Job-Hopping](https://longda.us/2016-09-23/jump/) (2016-09-23): A short talk on job-hopping: analyzing the essence and trade-offs of changing jobs across dimensions such as salary, future career and company prospects,... - [Complaining About GoDaddy](https://longda.us/2016-08-10/godaddy/) (2016-08-10): A rant about GoDaddy deleting my personal hosting and wiping out five years of blog posts: a strong condemnation of their lack of accountability, plus a... ### Hands-on Practice (11) - [Vector Database Best Practices Distilled by OceanBase over Three Years](https://longda.us/2026-06-01/2026-06-01-vector-database-best-practices/) (2026-06-01): Two OceanBase vector database experts distill three years of hands-on PoC experience, systematically covering vector index selection, memory and disk... - [Stop Following the Crowd Blindly: The Core Principles Behind Seven Companies' Real-World Vector Database Choices](https://longda.us/2026-04-09/2026-04-09-vector-database-selection-principles/) (2026-04-09): This article reviews the real thinking and practice of seven companies—including Qihoo 360, China Unicom, Lalamove, Weibo, and Quwan Technology—in their... - [My Editor Job Has Been Replaced by AI — A seekdb Fork Table Capability Test Report](https://longda.us/2026-04-01/2026-04-01-seekdb-fork-table-test-report/) (2026-04-01): An experiment report on having an AI Agent automatically deploy seekdb and test its Fork Table capability. Through five scenarios, data isolation, version... - [Saving My Company $5,000 in Just Two Weekends: Refactoring a Knowledge Base from a Multi-Database Architecture to an AI-Native Database](https://longda.us/2025-12-25/2025-12-25-ai-native-database-knowledge-base-refactor/) (2025-12-25): In two weekends, the author refactored an enterprise knowledge base from a four-database stack (PostgreSQL + Elasticsearch + Pinecone + Redis) into a... - [A Guide to Using the OceanBase Vector Database](https://longda.us/2025-09-24/2025-09-24-oceanbase-vector-db-guide/) (2025-09-24): The official guide to using the OceanBase vector database: a detailed walkthrough of vector index types such as HNSW, HNSW_SQ, HNSW_BQ, IVF, and IVF_PQ,... - [Deploying the OceanBase Database in an Ubuntu Virtual Machine](https://longda.us/2025-09-19/2025-09-19-ubuntu-vm-deploy-oceanbase/) (2025-09-19): This article shares the complete process of deploying a standalone OceanBase Community Edition database via OBD's GUI in a WSL Ubuntu 22.04 virtual machine... - [A Practical Guide to Vector Databases for Personalized Recommendation in UGC Communities](https://longda.us/2025-08-25/2025-08-25-vector-db-ugc-recommendation/) (2025-08-25): A practical guide to building a personalized recommendation system for UGC communities on OceanBase's native vector capabilities: dual-vector user interest... - [A New Open-Source Community Development Experience in the Vibe Coding Era](https://longda.us/2025-07-28/2025-07-28-vibe-coding-opensource-community/) (2025-07-28): Drawing on the real experience of an OceanBase community developer, this article shows how to use Cursor together with the OceanBase MCP Server to create... - [OBCP V4 Official Mock Exam Analysis (with Answers)](https://longda.us/2025-07-22/2025-07-22-obcp-v4-mock-exam-analysis/) (2025-07-22): This article compiles the 50 mock questions publicly available on the OBCP V4 official site—covering single-choice, multiple-choice, and true/false... - [The Evolution of OceanBase Auto-increment Columns and Best Practices](https://longda.us/2025-07-21/2025-07-21-oceanbase-auto-increment-evolution/) (2025-07-21): This article traces the evolution of OceanBase auto-increment columns from 4.0.0 to 4.2.3, compares the principles and jump behavior of the ORDER and... - [OceanBase PoC Lessons Learned (Part 2) — AP Workloads](https://longda.us/2025-07-07/2025-07-07-oceanbase-poc-ap-business/) (2025-07-07): This article summarizes hands-on experience from OceanBase AP workload PoCs, centered on business migration strategy and database object design. It covers... ### News (11) - [OceanBase Community Monthly: Kernel and AI Tool Releases, Plus Events Across China](https://longda.us/2026-08-12/2026-08-12-oceanbase-community-monthly/) (2026-08-12): August 2026 OceanBase Community Monthly: AgentSeek 0.0.5–0.1.1, V4.4.2_CE_BP2, OBD v4.5.0, 15 certifications, plus WAIC, Suzhou, and Beijing events. - [OceanBase Community Monthly: Building Agents with a Closed Data Loop](https://longda.us/2026-07-09/2026-07-09-oceanbase-community-monthly/) (2026-07-09): July 2026 OceanBase Community Monthly: PowerMem 1.1.x and AgentSeek help developers ship agents with a closed data loop, plus certifications and city events. - [Build the Data Foundation for the Agent Era: Contribute to Easy Data x AI](https://longda.us/2026-07-02/2026-07-02-easy-data-ai-course-call/) (2026-07-02): Help co-build Easy Data x AI, an open introductory course on data foundations, AI agents, retrieval, memory, and practical AI applications. - [OceanBase Community Monthly: AgentSeek Launches as seekdb Delivers a 22× Streaming Throughput Gain](https://longda.us/2026-06-10/2026-06-10-oceanbase-community-monthly-agentseek-seekdb/) (2026-06-10): OceanBase's June roundup covers seekdb 1.3.0 async indexing with 22× streaming throughput, the AgentSeek agent toolkit, and obd/obdiag upgrades. - [Shanghai Meetup Highlights: Xinye's Cost Cuts, Suanzhi Future's Hybrid Search, and AgentSeek's One-Stop Agent Engineering](https://longda.us/2026-06-03/2026-06-03-shanghai-meetup-recap/) (2026-06-03): A recap of the Shanghai Agent Infra technical salon co-hosted by OceanBase and the LangChain Community: the debut of the AgentSeek enterprise-grade agent... - [OceanBase Community Monthly: Major Updates to PowerMem, OMS, and obdiag](https://longda.us/2026-05-21/2026-05-21-oceanbase-community-monthly-2026-05/) (2026-05-21): OceanBase Community Monthly for May 2026: PowerMem v1.0.0 integrates pyseekdb for embedded vector storage, OMS V4.2.13-CE adds ES, MongoDB, and ClickHouse... - [Shanghai, Here We Come! On 5/30, OceanBase × LangChain Join Forces to Debut \"AgentSeek\" and Define a New Paradigm for Enterprise Agent Development](https://longda.us/2026-05-13/2026-05-13-shanghai-oceanbase-langchain-meetup-preview/) (2026-05-13): On May 30, OceanBase teams up with the LangChain Community for an offline Meetup in Zhangjiang, Shanghai, where it will fully unveil AgentSeek, an... - [OceanBase Teams Up with Baidu ERNIE & PaddlePaddle, Qoder, and Multiple Hardware Vendors to Explore Production-Grade Agent Deployment](https://longda.us/2026-04-25/2026-04-25-oceanbase-paddle-qoder-agent-production/) (2026-04-25): On April 25, OceanBase joined forces with Baidu ERNIE & PaddlePaddle, Qoder, and several smart-hardware vendors to host the \"Storage and Compute Evolution... - [Live from the Community Carnival! Open Source, Open Ecosystem, Shared Success — a 13-Year-Old Takes Second Place in AI Coding!](https://longda.us/2026-02-06/2026-02-06-community-carnival-2026/) (2026-02-06): On January 31, the 2026 OceanBase Community Carnival was held in Shanghai, gathering over 260 developers. Through keynotes, panel discussions, AI Coding... - [Born for AI: Efficiently Build Your Agent and AI System Architecture with OceanBase seekdb](https://longda.us/2025-12-03/2025-12-03-seekdb-agent-ai-architecture/) (2025-12-03): After open sourcing its AI-native database seekdb, OceanBase launched a writing contest with prizes, inviting developers to deploy and experience seekdb, or... - [A Recap of the Hands-on AI Workshop at the OceanBase Annual Conference](https://longda.us/2025-11-28/2025-11-28-oceanbase-handson-ai-workshop/) (2025-11-28): A recap of the Hands-on AI Workshop at the OceanBase Annual Conference: hundreds of developers, guided by experts from LangChain, Dify, and OceanBase,... ### Product Deep Dive (11) - [Why OceanBase Built Lakebase](https://longda.us/2026-07-23/2026-07-23-why-we-build-lakebase/) (2026-07-23): Yanran (Han Fusheng) explains why OceanBase built Lakebase to unify multimodal data, hybrid search, and agent-ready access for enterprises. - [Designing a Lakehouse AI Database for Production Agents](https://longda.us/2026-07-08/2026-07-08-lakehouse-ai-database-design/) (2026-07-08): OceanBase CTO Rizhao (Yang Chuanhui) explains Lakebase, a lakehouse AI database for multimodal data, open compute, and production agents. - [OceanBase seekdb 1.3.0 Released: 22x Performance Gain, Jitter-Free P99](https://longda.us/2026-06-09/2026-06-09-seekdb-1-3-0-release/) (2026-06-09): OceanBase seekdb 1.3.0 is here, introducing an asynchronous index model based on Change Stream that decouples writes from index building. In streaming... - [seekdb 1.2.0 Released: Primary-Standby Disaster Recovery Goes Live, and Full-Database Cloning in Seconds Is Here](https://longda.us/2026-04-03/2026-04-03-seekdb-1-2-0-release/) (2026-04-03): seekdb 1.2.0 is officially released, bringing its first high-availability solution—a primary-standby asynchronous replication architecture supporting both... - [Giving OpenClaw Long-Term Memory — PowerMem 1.0.0 Officially Released](https://longda.us/2026-03-19/2026-03-19-powermem-1-0-0-release/) (2026-03-19): OceanBase's open-source intelligent memory system PowerMem 1.0.0 is officially released: a new pmem CLI operations plane and a Dashboard cognition plane,... - [From Vibe Coding to AI Agents — OceanBase seekdb Builds a Millisecond-Level Data Sandbox for the AI Era](https://longda.us/2026-03-03/2026-03-03-seekdb-ai-data-sandbox/) (2026-03-03): OceanBase seekdb 1.1.0 introduces the Fork Table feature. Based on copy-on-write and consistent snapshots, it creates logically independent,... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 2)](https://longda.us/2026-01-29/2026-01-29-unified-ai-data-stack-part2/) (2026-01-29): This article analyzes RAG's architectural evolution from Naive and Advanced to Modular RAG and its production pain points, and introduces PowerRAG — an... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 1)](https://longda.us/2026-01-28/2026-01-28-unified-ai-data-stack-part1/) (2026-01-28): This article dissects the new database needs and pain points developers face in the AI era, and introduces OceanBase seekdb — a lightweight, multimodal,... - [A Deep Dive into the OceanBase Ecosystem Toolchain — OAT / obd / OCP / obshell](https://longda.us/2026-01-08/2026-01-08-oceanbase-ecosystem-tools/) (2026-01-08): Zhimin, the product owner for OceanBase ecosystem tools, takes a deep dive into the roles and relationships of the four operations and management tools —... - [A Developer's View of OceanBase's Open-Source AI Product Trio](https://longda.us/2025-12-26/2025-12-26-oceanbase-ai-products-developer-view/) (2025-12-26): An OceanBase engineer offers a developer's take on three open-source AI products—seekdb, PowerRAG, and PowerMem—dissecting the three big challenges of the... - [In the AI Era, Why Did OceanBase Open Source an AI-Native Database Like seekdb?](https://longda.us/2025-11-26/2025-11-26-why-oceanbase-opensource-seekdb/) (2025-11-26): Feng Zhongyan (Lao Ji), General Manager of OceanBase's Open Source Ecosystem, systematically answers three questions—why seekdb was open sourced, how it... ### Industry Insights (9) - [When AI Agents Wipe Databases, Databases Learn from Git](https://longda.us/2026-08-31/2026-08-31-agent-deletes-database-git/) (2026-08-31): After a Replit agent wiped production during a code freeze, Git-like database branches emerged as a safer way to isolate AI agent changes. - [Is AI Giving Rise to 'Marxism' in the Tech Industry?](https://longda.us/2026-08-10/2026-08-10-ai-marxism-socialism/) (2026-08-10): Palantir CEO Alex Karp called the AI industry Marxist. The real issue is who owns prompts, workflows, and memory when firms use models. - [LangChain \"Goes Off-Script\" and Builds a Database from Scratch?](https://longda.us/2026-05-18/2026-05-18-langchain-builds-database/) (2026-05-18): To solve the problem of exploding Agent trace data in LangSmith, LangChain built a distributed database, SmithDB, from scratch. This article unpacks its... - [7 Million People Watch AI Wipe a Database, and the Culprit Writes a Bizarre Confession](https://longda.us/2026-05-09/2026-05-09-ai-deletes-database-incident/) (2026-05-09): PocketOS's AI Agent, running in Cursor + Claude Opus, unilaterally deleted the Railway production database and its backups, causing an incident in 9 seconds... - [DeepMind CEO Interview: We're Just 4 Years and 3 Final Puzzle Pieces Away from AGI](https://longda.us/2026-05-09/2026-05-09-deepmind-ceo-agi-interview/) (2026-05-09): In a recent interview, Google DeepMind CEO Demis Hassabis predicts AGI could arrive by 2030 and pinpoints AI's three biggest gaps today: continual learning,... - [Talking with AI: How Do You Survive the AI Chaos?](https://longda.us/2026-04-25/2026-04-25-surviving-ai-era-conversation/) (2026-04-25): A survival guide distilled from a conversation with AI—covering the logic of big-tech layoffs, the predicament at each level from P6 to P9, a four-layer... - [Developers Cheer, Ordinary People Are Lost: After OpenClaw, Which Way for 'Usable AI'?](https://longda.us/2026-02-11/2026-02-11-usable-ai-after-openclaw/) (2026-02-11): Compiled from a panel discussion at the OceanBase Community Carnival, where guests from Eigent, Ant Bailing, Fellou, and others discuss the OpenClaw... - [Skills Arrive — Is Prompt Dead? In 2026, How Do We Build Controllable Thinking for Agents?](https://longda.us/2026-02-07/2026-02-07-skills-vs-prompt-agent-thinking/) (2026-02-07): A panel transcript from the OceanBase Community Carnival: experts from RAGFlow, FastGPT, Nowledge Labs, and OceanBase discuss where the RAG ecosystem is... - [Data-Driven Innovation and Transformation in the Pan-Internet Industry, and New Opportunities for Databases](https://longda.us/2025-06-16/2025-06-16-pan-internet-innovation-database-opportunities/) (2025-06-16): An exploration of how data-driven change is transforming the pan-internet industry and the new opportunities this creates for databases, covering technical... ### User Practices (1) - [Migrating from HBase to OceanBase: The Ultimate Solution for Real-Time Data Writes with Flink](https://longda.us/2026-04-24/2026-04-24-hbase-to-oceanbase-flink-migration/) (2026-04-24): This article introduces a real-time data-write solution based on Flink and OceanBase OBKV-HBase—fully compatible with the HBase API, supporting buffered... ## Full Article Index > Auto-generated list of all 180 articles, grouped by category and newest first within each. Each entry links to the canonical page; plain-text bodies live in /llms-full.txt. ### AI Applications (44) - [From Whispers to the Bulletin Board: Multi-Agent Memory Isolation in Action](https://longda.us/2026-08-03/2026-08-03-multi-agent-memory-isolation-game/) (2026-08-03): A PowerMem and seekdb game shows how multi-agent memory remains isolated until an operator publishes a private card to a shared bulletin board. - [After WAIC, I Stopped Believing in the Omnipotent Agent](https://longda.us/2026-07-28/2026-07-28-waic-not-omnipotent-agent/) (2026-07-28): WAIC field notes show that agents create value in bounded use cases—with ontology, live data, DRIs, and on-device memory—not as all-purpose generalists. - [Graph Engineering: Don't Let One Agent Be Both Player and Referee](https://longda.us/2026-07-27/2026-07-27-graph-engineering-agent-roles/) (2026-07-27): Graph Engineering does not replace the agent loop. It separates execution, validation, and direction so one agent does not judge its own work. - [Designing AI Memory Systems: Architecture and Engineering Practice](https://longda.us/2026-07-21/2026-07-21-ai-memory-system-architecture/) (2026-07-21): An architectural view of AI memory as a Memory OS built on a Raw Ledger, Views, and Policy, followed by a practical implementation in PowerMem. - [What Should a Database Become When AI Agents Start Using It?](https://longda.us/2026-07-06/2026-07-06-agent-database-oceanbase-lakebase/) (2026-07-06): An editorial look at OceanBase Lakebase, seekdb, and PowerMem for AI-agent data, hybrid retrieval, safe experimentation, and long-term memory. - [Evaluating GLM-5.2 on Long-Horizon Tasks: PowerMem Python-to-TypeScript SDK Alignment](https://longda.us/2026-06-29/2026-06-29-glm-powermem-typescript-evaluation/) (2026-06-29): A seven-round GLM-5.2 evaluation of PowerMem Python-to-TypeScript SDK alignment, testing long-horizon engineering discipline beyond context length. - [Predicting the 2026 World Cup with seekdb: Data Modeling to Probability Simulation](https://longda.us/2026-06-22/2026-06-22-seekdb-world-cup-monte-carlo/) (2026-06-22): Build a 2026 FIFA World Cup Monte Carlo demonstration in seekdb with Elo ratings, Poisson goal models, and SQL stored procedures. - [PowerMem Quick Start: Building a Self-Evolving Agent Memory Layer](https://longda.us/2026-06-12/2026-06-12-powermem-quick-start/) (2026-06-12): Install PowerMem on Linux, open the Dashboard, then connect Claude Code and OpenClaw for cross-session Agent memory with self-evolving recall. - [How to Combine PaddleOCR with OceanBase to Achieve the First Mile of Enterprise Asset Intelligence](https://longda.us/2026-06-05/2026-06-05-paddleocr-oceanbase-asset-intelligence/) (2026-06-05): From Yang Youzhi of Baidu's PaddlePaddle AI Studio community, this article explains how to use PaddleOCR-VL-1.6 to parse unstructured enterprise documents... - [Building an Agent System Solution on OceanBase & LangChain to Get Agents into Production Fast](https://longda.us/2026-06-02/2026-06-02-oceanbase-langchain-agent-solution/) (2026-06-02): At the Shanghai Meetup, LangChain & OceanBase community ambassador Canghai Jiusu unveiled AgentSeek — an agent engineering toolkit built on OceanBase and... - [LangChain's Crash Course? Using the Harness to Explain the Value and Practice of an All-in-one Data Foundation](https://longda.us/2026-05-26/2026-05-26-langchain-harness-allinone-data-base/) (2026-05-26): Starting from the definition and layered structure of the Harness, and drawing on the plugin-based design of the open-source project Bub and the Tape... - [The OceanBase Community Opens Up Its Skill Universe!](https://longda.us/2026-05-22/2026-05-22-oceanbase-community-skill-universe/) (2026-05-22): The OceanBase community open-sources the oceanbase-skills repository, debuting deployment and operations Skills that let an AI Agent handle cluster... - [Why Is Your Token Consumption So High? Money-Saving Tricks with OpenClaw](https://longda.us/2026-05-08/2026-05-08-openclaw-token-cost-saving/) (2026-05-08): OpenClaw's full-load MEMORY.md and lossy compaction are two big token black holes. seekdb M0 uses on-demand retrieval of cloud memory, rule-based... - [How Do You Write a Workflow Skill? Patterns and Best Practices Distilled from 7 Top-Tier Projects](https://longda.us/2026-04-27/2026-04-27-workflow-skill-best-practices/) (2026-04-27): This article analyzes line by line 7 production-grade Skills from teams such as OpenAI, Google Labs, obra, and Trail of Bits, distilling 5 workflow Skill... - [Token, Harness, OpenClaw, RAG, MCP, Agent—How Do They All Relate? One Diagram Makes It Clear](https://longda.us/2026-04-16/2026-04-16-ai-concepts-relationship-diagram/) (2026-04-16): Using the real task of \"generating a new-product R&D slide deck with data charts,\" this article walks through the relationships and division of labor among... - [bubseek — Turning an Agent's Footprints into Team Insights](https://longda.us/2026-04-15/2026-04-15-bubseek-agent-insights/) (2026-04-15): bubseek is a self-driven insight Agent built on the bub framework and OceanBase seekdb. With just a single prompt, it can autonomously connect to data... - [Say Goodbye to Losing OpenClaw Configs—Mindkeeper Beta Invitation](https://longda.us/2026-04-10/2026-04-10-mindkeeper-beta-invitation/) (2026-04-10): Mindkeeper is a version management tool built specifically for AI Agent configuration files. Using a shadow Git repository, it automatically tracks every... - [OpenClaw Ships Yet Another Release — How to Track Every Second of Its Spend in Real Time and Open the Agent \"Thinking\" Black Box](https://longda.us/2026-03-24/2026-03-24-openclaw-cost-tracking/) (2026-03-24): After OpenClaw's new release, the compute consumption of parallel multi-Agent and long-horizon tasks is harder to control. The open-source tool ClawProbe... - [Why Does OpenClaw Get Better the More You Use It?](https://longda.us/2026-03-18/2026-03-18-why-openclaw-gets-better/) (2026-03-18): A deep look at the essence of OpenClaw \"getting better the more you use it\": through a read-write loop over md data files such as... - [OpenClaw in Practice: One Mac, Six Agents, the Engineering Journey from \"Chatting\" to \"Getting Work Done\"](https://longda.us/2026-03-11/2026-03-11-openclaw-mac-six-agents/) (2026-03-11): On a single Mac, the author uses OpenClaw to build a multi-Agent team of one orchestrator plus five specialist Agents, with 52 cron jobs rotating around the... - [OpenClaw + seekdb skills: Build Your Own Personal seekdb Assistant](https://longda.us/2026-03-04/2026-03-04-openclaw-seekdb-skills-assistant/) (2026-03-04): This article explains how to install seekdb Agent Skills in the personal AI assistant OpenClaw via pip or ClawHub, load the seekdb official documentation... - [EchoKit × OceanBase seekdb: An Open-Source, Localized Voice AI Framework](https://longda.us/2026-02-27/2026-02-27-echokit-seekdb-voice-ai/) (2026-02-27): EchoKit is a Rust-based voice AI framework open-sourced by the WasmEdge team. It supports local deployment and modular replacement of ASR/LLM/TTS, and... - [Building Persistent Memory for an AI Agent With seekdb: From \"Full Context\" to \"Precise Recall\"](https://longda.us/2026-02-26/2026-02-26-seekdb-agent-persistent-memory/) (2026-02-26): This article explains how to build a vectorized persistent memory system for a Node.js AI Agent based on the seekdb-js SDK and Qwen3 Max (via OpenRouter),... - [uv × pyseekdb: Driving the Cost of a RAG Environment and Retrieval to a Minimum](https://longda.us/2026-02-13/2026-02-13-uv-pyseekdb-rag-setup/) (2026-02-13): This article introduces the combination of two tools, uv and pyseekdb. uv solves Python environment reproducibility with pyproject.toml and uv.lock, while... - [Vibe Coding Notes — Google AI Studio](https://longda.us/2026-01-23/2026-01-23-vibe-coding-google-ai-studio/) (2026-01-23): A look at how to do Vibe Coding with the token-free Google AI Studio: through just four natural-language exchanges, we build a zero-code AI app that turns a... - [Master the AI-Native Database with Natural Language — the seekdb MCP Server](https://longda.us/2026-01-22/2026-01-22-seekdb-mcp-server/) (2026-01-22): This article explains how to install and configure the seekdb MCP Server, covering both embedded and client/server deployment modes and the Stdio and SSE... - [Help the Cursor AI Assistant Instantly Get Vector Databases — A Guide to the Cursor seekdb Extension](https://longda.us/2026-01-14/2026-01-14-cursor-seekdb-extension-guide/) (2026-01-14): This article explains how to install and use the seekdb Cursor Extension to inject seekdb's official documentation into the .cursor/rules directory, giving... - [Hybrid Search: A Hands-on Guide to Multimodal Retrieval (Chapter 4)](https://longda.us/2026-01-09/2026-01-09-hybrid-search-multimodal-guide/) (2026-01-09): This is Chapter 4 of the Agentic RAG series. It explains in detail how Hybrid Search fuses three modalities — vector search, sparse search, and full-text... - [A Spoon-Fed Tutorial (Bonus Edition) — Deploying Dify on K8s](https://longda.us/2026-01-04/2026-01-04-dify-on-k8s-tutorial/) (2026-01-04): This is the bonus, spoon-fed tutorial in the \"Dify x OceanBase seekdb\" series. It demonstrates how to deploy Dify—using seekdb as both its metadata database... - [A Step-by-Step Tutorial II — A Guide to Using Dify x OceanBase seekdb](https://longda.us/2025-12-11/2025-12-11-dify-oceanbase-seekdb-guide/) (2025-12-11): A step-by-step tutorial detailing how to configure OceanBase seekdb as both the metadata database and the vector database in Dify v1.10.1, replacing a... - [Building an Intelligent Book Search App from Scratch with seekdb](https://longda.us/2025-12-10/2025-12-10-seekdb-book-search-app/) (2025-12-10): Using an intelligent book search app as an example, this article walks you hands-on through data import, vector embedding, and HNSW index creation with... - [A Step-by-Step Tutorial — Building a RAG Application with OceanBase seekdb](https://longda.us/2025-12-05/2025-12-05-seekdb-rag-tutorial/) (2025-12-05): This is a step-by-step tutorial that walks you hands-on through building a RAG (Retrieval-Augmented Generation) system with OceanBase seekdb, covering the... - [Explaining DeepSeek-OCR in the Plainest Language — The Disruptive Idea of Optical Context Compression](https://longda.us/2025-10-31/2025-10-31-deepseek-ocr-jinghua/) (2025-10-31): An in-depth reading of the disruptive idea behind the DeepSeek-OCR paper — optical context compression. It explores how to use pixels instead of text as LLM... - [Exploring How AI Reshapes Database Products — obloader agent and OceanBase Agent](https://longda.us/2025-10-13/2025-10-11-ai-gaibian-shujuku-chanpin/) (2025-10-13): Exploring a new form of combining AI with database products. This article introduces how the obloader agent simplifies the use of data-loading tools through... - [Code Indexing in Practice in the Age of AI Coding](https://longda.us/2025-08-22/2025-08-22-ai-coding-code-index/) (2025-08-22): This article traces the four leaps of code search — from text matching to semantic retrieval, graph indexing, and agentic search — and shares hands-on... - [A Step-by-Step Guide to Building an Agent with ModelScope x OceanBase MCP](https://longda.us/2025-08-15/2025-08-15-modelscope-oceanbase-mcp-agent/) (2025-08-15): OceanBase and ModelScope jointly introduce a new paradigm for AI-driven intelligent database management. Through MCP, developers can create, run, manage,... - [Dify + OceanBase: Multi-Scenario Practice for Landing AI Workloads](https://longda.us/2025-08-12/2025-08-12-dify-oceanbase-ai-multi-scenario/) (2025-08-12): This article shares the practice of choosing Dify on OceanBase to build AI applications, using OceanBase to consolidate PostgreSQL, Redis, and Weaviate into... - [Context Engineering: A Code Documentation Retrieval Engine Built on OceanBase](https://longda.us/2025-08-08/2025-08-08-context-engineering-code-doc-retrieval/) (2025-08-08): Doc2Dev builds a code documentation retrieval engine on the OceanBase vector database, providing AI coding assistants with up-to-date documentation through... - [Say Goodbye to Tedious Manual Analysis—OceanBase Agent Makes Database Operations Easy!](https://longda.us/2025-08-04/2025-08-04-oceanbase-agent-database-ops/) (2025-08-04): OceanBase Agent leverages large models to simplify daily database operations. With 70+ built-in SQL tools, support for custom Tools, Playbook task flows,... - [Agentic AI, Built on Dify x OceanBase in Practice](https://longda.us/2025-08-01/2025-08-01-agentic-ai-dify-oceanbase/) (2025-08-01): A core Dify contributor unpacks the Agentic AI trend and the platform capabilities it demands, introduces how OceanBase provides one-stop support for Dify... - [AI Replacing the Traditional GUI: An OBCloud Workflow Based on MCP](https://longda.us/2025-07-24/2025-07-24-mcp-obcloud-workflow/) (2025-07-24): Traditional database operations require clicking through the console level by level and repeatedly consulting documentation—slow and inefficient. From a... - [Hands-On: Building an MCP Advisor on OceanBase](https://longda.us/2025-07-11/2025-07-11-oceanbase-mcp-advisor/) (2025-07-11): Faced with the challenges of dynamic planning, service discovery, and usage complexity brought by tens of thousands of MCP tools, Ant Group Agent engineer... - [Dify + OceanBase + MCP: A Trio That Makes Building RAG Applications Easy](https://longda.us/2025-07-10/2025-07-10-dify-oceanbase-mcp-rag/) (2025-07-10): Through a hands-on case study, this article shows how to use Dify, OceanBase, and MCP to build a fully functional RAG application from scratch. It covers... - [AI Application Development: An Innovative Unstructured Document Analysis System That Avoids the Limitations of Traditional Approaches](https://longda.us/2025-07-04/2025-07-04-ai-app-unstructured-document-analysis/) (2025-07-04): A team from Beijing Institute of Technology built QUEST, an intelligent unstructured document analysis system on OceanBase. Through sampling-based... ### Technical Deep Dive (44) - [An OceanBase Backup Mystery: Who Cleaned Up My Backup Data?](https://longda.us/2026-06-15/2026-06-15-oceanbase-backup-cleanup-case/) (2026-06-15): An OceanBase backup cleanup case study: how full, incremental, and log backups link into recovery chains—and why directories disappear on schedule. - [A Message's Lifecycle in PowerMem: From Ingestion to Forgetting](https://longda.us/2026-06-12/2026-06-12-powermem-message-lifecycle/) (2026-06-12): Follow a meeting reminder through PowerMem's agent memory lifecycle: six-dimension importance scoring, tier placement, spaced review, retrieval ranking, and... - [From Neurons to Code Engineering: The Forgetting Design of the PowerMem Memory System](https://longda.us/2026-06-08/2026-06-08-powermem-forgetting-design/) (2026-06-08): Starting from synaptic plasticity, memory consolidation, information theory, and the Ebbinghaus forgetting curve, this article unpacks the forgetting... - [A Deep \"Dissection\" of the AI Agent Harness](https://longda.us/2026-05-25/2026-05-25-ai-agent-harness-deep-dive/) (2026-05-25): This article introduces Akshay Pachaar's long-form piece \"The Anatomy of an Agent Harness,\" systematically breaking down the Agent Harness architectures of... - [A Deep Dive into LLM Wiki / Obsidian-Wiki / GBrain: The \"Self-Organization\" and \"Self-Evolution\" of Knowledge in the Agent Era](https://longda.us/2026-04-28/2026-04-28-llm-wiki-knowledge-self-organization/) (2026-04-28): From a knowledge-engineering perspective, this article dissects the designs of Karpathy's LLM Wiki, Obsidian-Wiki, and GBrain, analyzing the... - [How Agent / Skills / Teams Architectures Evolve, and How to Choose Among Them](https://longda.us/2026-03-10/2026-03-10-agent-skills-teams-architecture-evolution/) (2026-03-10): This article traces the evolution of Agent architectures from Single Agent and Multi-Agent to Agent Skills and Agent Teams. Drawing on a Google DeepMind... - [How Does OpenClaw Make AI Feel \"Human\"?](https://longda.us/2026-02-25/2026-02-25-openclaw-humanlike-ai/) (2026-02-25): This article takes the form of study notes to unpack the engineering mechanisms OpenClaw uses to make AI feel \"human\" — live context assembled at runtime,... - [A Guide to Optimizing Vector Indexes in OceanBase](https://longda.us/2025-12-19/2025-12-19-oceanbase-vector-index-optimization/) (2025-12-19): Xia Jin, a vector-index engineer on OceanBase, takes a deep dive into how OceanBase / seekdb vector indexes are built and the structure of their five... - [The Mystery of OceanBase Session IDs](https://longda.us/2025-11-21/2025-11-21-oceanbase-session-id-mystery/) (2025-11-21): This article systematically untangles the design logic of Session IDs in OceanBase. The two connection types — C connections and S connections — correspond... - [Explaining AI Memory in the Plainest Possible Language](https://longda.us/2025-11-18/2025-11-18-ai-memory-explained/) (2025-11-18): This article explains AI Memory in plain language. Starting from how the human brain classifies and operates on memory, it compares the storage areas and... - [OceanBase Partitioning Fundamentals](https://longda.us/2025-11-14/2025-11-14-oceanbase-partition-basics/) (2025-11-14): A systematic introduction to OceanBase partitioning fundamentals, covering the role of partitioning in partition pruning, data maintenance, and data... - [The Database Evolution of the AI Era — From Vectors to Hybrid Search](https://longda.us/2025-11-07/2025-11-07-database-evolution-vector-hybrid-search/) (2025-11-07): An accessible, easy-to-understand explainer. Starting from the classification of structured, semi-structured, and unstructured data, it explains why vector... - [A New Way to Tackle \"Read Amplification\" — Merge-On-Write Tables in OceanBase](https://longda.us/2025-11-06/2025-11-06-oceanbase-merge-on-write/) (2025-11-06): An introduction to the Merge-On-Write table launched in OceanBase 4.3.5. By splitting an update into delete + insert and writing the full set of columns, it... - [Key Techniques and Methods for OceanBase Database Diagnosis and Tuning](https://longda.us/2025-09-18/2025-09-18-oceanbase-diagnosis-tuning/) (2025-09-18): This article systematically reviews the fault classification and root causes of OceanBase, proposes a five-step diagnosis and tuning process—problem... - [When the Intelligent Robot Says \"Bro, the Language Just Doesn't Connect\"—How Should You, the Developer, Respond?](https://longda.us/2025-09-12/2025-09-12-ai-robot-language-developer/) (2025-09-12): When an intelligent robot cannot understand minor languages such as Thai, developers can use OceanBase's plugin mechanism to respond quickly to... - [Getting to Know ASH — Opening the Database's \"Treasure Box of Time\"](https://longda.us/2025-09-01/2025-09-01-ash-database-monitoring/) (2025-09-01): ASH (Active Session History) is the OceanBase database's \"intelligent monitoring system,\" taking a state snapshot of active sessions every second. Through... - [Safeguarding Performance in High-Concurrency Scenarios with OceanBase](https://longda.us/2025-08-26/2025-08-26-oceanbase-high-concurrency-performance/) (2025-08-26): From the design of kernel components — plan management, concurrency control, multi-dimensional caching, hot-row optimization, log aggregation, and... - [Hybrid Query Methods for Vector Indexes — Did You Pick the Right One?](https://longda.us/2025-08-19/2025-08-19-vector-index-hybrid-query/) (2025-08-19): This article explains the principles and usage of hybrid queries on OceanBase vector indexes, including how to choose among the three scalar-filtering... - [Automatic Partition Splitting — An Epic Usability Upgrade for OceanBase](https://longda.us/2025-08-11/2025-08-11-oceanbase-auto-partition-split/) (2025-08-11): A deep dive into OceanBase's automatic partition splitting feature: the pain points of manual partitioning, the principles, characteristics, applicable... - [OceanBase: How Does It Achieve Extreme Cost Reduction Across Hardware, Storage, and Operations?](https://longda.us/2025-07-29/2025-07-29-extreme-cost-reduction-analysis/) (2025-07-29): This article takes a deep dive into the core technologies behind OceanBase's extreme cost reduction across hardware, storage, and operations, including its... - [When OceanBase on K8s Meets AI — A Deep Dive into the Design of okctl-mcp-server](https://longda.us/2025-07-18/2025-07-18-okctl-mcp-server-design/) (2025-07-18): In this article, OceanBase community contributor Li Ziyi takes a deep dive into the design of okctl-mcp-server, explaining how the MCP protocol lets AI... - [The Architecture Design and Optimization of OceanBase's Standalone-Distributed Integrated Database](https://longda.us/2025-07-08/2025-07-08-standalone-distributed-integrated-database/) (2025-07-08): Zhifeng Yang, General Manager and Chief Architect of the OceanBase product, offers a technical interpretation of the standalone-distributed integrated... - [Using OpenManus to Build an Auto-Diagnosis Agent: Pinpoint Database Anomalies in 30 Minutes](https://longda.us/2025-06-27/2025-06-27-openmanus-diagnostic-agent/) (2025-06-27): Building a database auto-diagnosis Agent based on the OpenManus framework to quickly pinpoint database anomalies in 30 minutes, including the complete... - [OceanBase Vector Database Boosts AI Retrieval Efficiency by 45x and Halves AI Agent Development Costs](https://longda.us/2025-06-26/2025-06-26-oceanbase-vector-db-ai-search/) (2025-06-26): A comprehensive look at OceanBase 4.3's vector database capabilities, supporting HNSW indexes, hybrid search, and multimodal vectors, boosting AI retrieval... - [LLM vs. Small Models: The Right Way to Build an AI Agent for Domestic Database Operations](https://longda.us/2025-06-20/2025-06-20-ai-agent-database-ops/) (2025-06-20): Exploring how to use small models instead of full-scale LLMs for intelligent operations on domestic databases, enhancing reasoning ability through context,... - [How Database Technology and Solutions Support the Data Needs of the Pan-Internet Industry](https://longda.us/2025-05-30/2025-05-30-database-technology-support-pan-inter-industry/) (2025-05-30): Driven by the digital economy, this article explores how the pan-internet industry copes with the systemic challenges of exponential data growth. It... - [A Quick Introduction to Vector Databases](https://longda.us/2025-05-25/2025-05-25-vector-database-example/) (2025-05-25): A gentle introduction to vector database fundamentals: Embedding techniques, similarity metrics, search algorithms (HNSW, IVF, DiskANN), and index... - [Integrating OceanBase Monitoring with Prometheus/Grafana](https://longda.us/2021-11-21/obagent/) (2021-11-21): OceanBase Getting Started -- Integrating OceanBase Monitoring with Prometheus/Grafana This article explains the key context, decisions, and practical takeaways. - [OceanBase Offline Installation](https://longda.us/2021-11-20/ob_offline_install/) (2021-11-20): A guide to the offline installation of an OceanBase distributed three-replica cluster, covering passwordless SSH, disk planning, deploying OBServer/OBProxy... - [OceanBase Developer Handbook, Part 5: How to Debug OceanBase](https://longda.us/2021-11-11/debug_ob/) (2021-11-11): OceanBase Developer Handbook, Part 5: How to Debug OceanBase This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation](https://longda.us/2021-11-10/modify_ob_docs/) (2021-11-10): OceanBase Developer Handbook, Part 4: How to Modify OceanBase Documentation This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor](https://longda.us/2021-10-30/contribute_to_ob/) (2021-10-30): OceanBase Developer Handbook, Part 3: How to Become an OceanBase Contributor This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment](https://longda.us/2021-10-23/set_ide/) (2021-10-23): OceanBase Developer Handbook, Part 2: How to Set Up the IDE Development Environment This article explains the key context, decisions, and practical takeaways. - [OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code](https://longda.us/2021-10-16/build_ob/) (2021-10-16): OceanBase Developer Handbook, Part 1: How to Compile the OceanBase Source Code This article explains the key context, decisions, and practical takeaways. - [Disk Performance Testing](https://longda.us/2020-07-12/fileio/) (2020-07-12): Using sysbench to compare the I/O performance of Alibaba Cloud ESSD, SSD cloud disks, and local NVMe disks, covering the test script parameters and the... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc](https://longda.us/2020-07-05/tpcc/) (2020-07-05): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running tpcc This article explains the key context, decisions,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench](https://longda.us/2020-06-28/sysbench/) (2020-06-28): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running sysbench This article explains the key context,... - [DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH](https://longda.us/2020-06-22/TPCH/) (2020-06-22): Performance Testing -- DB Performance Testing - The 3 Common Suites - A Step-by-Step Guide to Running TPCH This article explains the key context, decisions,... - [A Detailed Analysis of filesort](https://longda.us/2020-06-21/mysql-filesort/) (2020-06-21): Notes on the MySQL filesort sorting mechanism: comparing the original and modified algorithms, the meaning of max_sort_length, and how the sort/addon fields... - [An Introduction to Clustered Indexes](https://longda.us/2020-06-14/mysql-cluster-index/) (2020-06-14): Notes on MySQL clustered and non-clustered indexes: InnoDB's primary-key-clustered storage, the advantages of covering indexes, and a comparison with... - [Spanner: Google’s Globally Distributed Database](https://longda.us/2019-11-05/spanner/) (2019-11-05): Reading notes on the Google Spanner globally distributed database paper: TrueTime, Paxos, and externally consistent transactions. - [Getting Started with Scala](https://longda.us/2016-08-24/scala-start/) (2016-08-24): Notes on getting started with Scala: the interpreter, val/var variables, functions and the Unit type, the foreach syntactic sugar, arrays, side effects, and... - [Scala Overview](https://longda.us/2016-08-23/scala-general/) (2016-08-23): Overview of the Scala language: a statically typed JVM language that blends object-oriented and functional programming, introducing the Actor concurrency... - [Scaling Out ZooKeeper](https://longda.us/2015-09-10/zookeeper-enlarge/) (2015-09-10): A hands-on guide to scaling ZooKeeper across data centers in the same city: expanding a single-DC three-node cluster into a 2-2-1 layout, adding nodes step... ### Enterprise Cases (30) - [Behind a 200x SQL Speedup: How Dewu Tuned OceanBase Execution Plans and Hints](https://longda.us/2026-07-15/2026-07-15-dewu-oceanbase-sql-hint-tuning/) (2026-07-15): At Dewu, OceanBase plan-cache reuse, partition pruning, columnar indexes, parallel execution, and Hints cut a complex SQL from 4s to 0.02s—about 200x. - [Suanzhi Future Builds an OceanBase Hybrid Search Foundation for Life-Science AI Data Synthesis](https://longda.us/2026-07-01/2026-07-01-life-science-hybrid-search/) (2026-07-01): How Suanzhi Future is building an OceanBase hybrid-search foundation for life-science AI data synthesis, combining exact lookup, full-text retrieval, and... - [Xinye Technology's OceanBase Practice: From Risk-Control Core to an AI Data Foundation](https://longda.us/2026-06-25/2026-06-25-xinye-oceanbase-practice/) (2026-06-25): How Xinye Technology uses OceanBase for risk control, data archiving, high availability, multitenancy, and an AI-ready data foundation. - [NetEase Open-Sources lb-driver: Driver-Layer Load Balancing for OceanBase OBProxy](https://longda.us/2026-05-12/2026-05-12-netease-lb-driver-obproxy-load-balancing/) (2026-05-12): After migrating its core business from the DDB sharding middleware to OceanBase, NetEase Yunxin built and open-sourced lb-driver to eliminate the link... - [More Than Just Replacing HBase: How Baofu Payment Leveraged OceanBase to Build a Future-Ready, Unified 'TP+AP+KV+AI' Data Foundation](https://longda.us/2026-01-21/2026-01-21-baofu-payment-oceanbase-unified-data-base/) (2026-01-21): The Baofu Payment data team shares its complete practice of replacing HBase with OceanBase's OBKV-HBase — from architectural pain points and selection... - [Tens of Millions of Members, Billions of Transactions: When the CRM System Buckles, How Did a Leading Pharma Company Upgrade to OceanBase for Real-Time, Precision Marketing?](https://longda.us/2026-01-16/2026-01-16-pharma-crm-database-upgrade/) (2026-01-16): OceanBase: Facing tens of millions of members, billions of transactions, and multidimensional behavioral data, the CRM membership system of Chongqing... - [The Data Foundation for Zuoyebang's AI Business: OceanBase Vector Database Multi-cloud Deployment and Architecture Design Optimization](https://longda.us/2025-12-31/2025-12-31-zuoyebang-vector-database-multicloud/) (2025-12-31): Zuoyebang built the data foundation for its AI business on OceanBase. This article details vector database selection, cross-cloud primary-standby tenant... - [OceanBase at Didi: Large-Scale Operations Experience and New Feature Adoption](https://longda.us/2025-12-17/2025-12-17-didi-oceanbase-ops-practice/) (2025-12-17): Since 2024, Didi has used OceanBase to replace RocksDB and TokuDB. Using its ride-hailing growth service and core archive database as examples, this article... - [vivo's Domestic Database Technology Reserve: Using OceanBase to Break Through the Storage and Performance Bottlenecks of Large-Scale Data](https://longda.us/2025-11-13/2025-11-13-vivo-database-technology/) (2025-11-13): vivo's internet business introduced OceanBase to replace MySQL, covering four scenarios — data archiving, horizontal sharding, high concurrency, and HTAP —... - [Migrating from a Sharded MyCat Architecture to OceanBase | Lessons from Belle Fashion's Core Financial System Migration](https://longda.us/2025-10-31/2025-10-31-baili-mycat-qianyi-oceanbase/) (2025-10-31): Belle Fashion Group migrated its core financial system from a sharded MyCat architecture to OceanBase, achieving a 30x performance improvement, a 96.7%... - [How to Build a Mature, Stable, Cost-Effective, and Easy-to-Use AI Application — Quwan Technology's Hands-on Practice Building an Employee Assistant on OceanBase](https://longda.us/2025-10-22/2025-10-22-quwan-ai-yuangong-zhushou/) (2025-10-22): When selecting the underlying database for its custom AI assistant, Quwan Technology compared multiple vector databases and chose OceanBase. This article... - [How to Avoid Pointless Work — Qifu Technology Cuts Code-Refactoring Costs by 90% After Ditching Sharding with OceanBase](https://longda.us/2025-10-16/2025-10-16-qifu-fenkufenbiao-gaizao/) (2025-10-16): Qifu Technology adopted OceanBase to replace part of its MySQL and TiDB usage, cutting code-refactoring costs by 90%, halving storage costs, reducing... - [Migrating a Distributed Database to OceanBase — A Smooth Migration Built on NetEase Cloud Music's In-house CDC Service](https://longda.us/2025-09-25/2025-09-25-netease-music-cdc-migration-oceanbase/) (2025-09-25): NetEase Cloud Music shares how it migrated its PB-scale sharded DDB database to the native distributed database OceanBase. Built on its in-house CDC service... - [A Step-by-Step Guide to Optimizing Vector Search: A Game Company's Intelligent Customer Service and Recommendation System on OceanBase](https://longda.us/2025-09-11/2025-09-11-game-vector-search-oceanbase/) (2025-09-11): A card game company built an intelligent customer service and UGC community recommendation system on OceanBase's vector database. Through HNSW indexing,... - [NetEase Personal Mail Upgrades Its Database to OceanBase: A Dual Breakthrough in Reliability and Stability](https://longda.us/2025-09-02/2025-09-02-netease-mail-oceanbase-upgrade/) (2025-09-02): NetEase Personal Mail upgraded its sharded MySQL architecture to OceanBase. Through technology selection comparison, unique-key governance, partition and... - [Dmall and OceanBase: Achieving Full Inter-Tenant Resource Isolation and Low-Cost System Upgrades](https://longda.us/2025-08-27/2025-08-27-dmall-oceanbase-resource-isolation/) (2025-08-27): Dmall shares its hands-on experience migrating from MySQL to OceanBase in a retail SaaS scenario — using multi-tenant resource isolation, transparent... - [70% Performance Boost — CR Vanguard Upgrades Its Core Database to OceanBase](https://longda.us/2025-08-20/2025-08-20-crv-vanguard-database-upgrade/) (2025-08-20): CR Vanguard's subsidiary Wanjia Digital upgraded a middleware-based MySQL sharded cluster to OceanBase, achieving a seamless, business-transparent migration... - [Hardware Costs Down 52%: How 99Bill Reduced Costs and Boosted Efficiency After Adopting OceanBase](https://longda.us/2025-08-13/2025-08-13-99bill-oceanbase-cost-reduction/) (2025-08-13): A 99Bill DBA shares the three transformations of their DB architecture — from MySQL primary-standby and MyCAT sharding to OceanBase — detailing five... - [From v3.1 to v4.3, OceanBase Steadily Powers Kuaishou's PB-Scale Core Business Scenarios](https://longda.us/2025-08-06/2025-08-06-kuaishou-oceanbase-pb-scale/) (2025-08-06): Kuaishou migrated from MySQL sharding to OceanBase, covering PB-scale core businesses such as transaction reconciliation and payments, and upgraded from... - [Tongfang Smart Energy: OceanBase Powers a Secure, Reliable, High-Performance Energy Data Foundation](https://longda.us/2025-08-05/2025-08-05-tongfang-smart-energy-oceanbase/) (2025-08-05): After comparing HBase-Phoenix, Ignite, and TiDB for its new-energy and metro projects, Tongfang Smart Energy chose OceanBase 4.2.1, achieving twice the... - [Escaping Three Major Dilemmas, Cultivating Five Key Scenarios | How TAL Education's AI Business Cut Costs by 86% with OceanBase](https://longda.us/2025-07-30/2025-07-30-tal-ai-oceanbase-cost-reduction/) (2025-07-30): Facing three major dilemmas—sharding, resource isolation, and resource fragmentation—the TAL Education Group adopted OceanBase and deeply cultivated five... - [Weibo's Database Architecture Upgrade with OceanBase: Both Stable and Cost-Saving](https://longda.us/2025-07-23/2025-07-23-weibo-partition-table-practice/) (2025-07-23): Yang Shanggang, head of Weibo's database technology, takes a deep dive into Weibo's database architecture upgrade: replacing MySQL sharding with OceanBase... - [OceanBase: Du Xiaoman Breaks Down Database Selection Across Five Technical Scenarios, Doubling Cost Savings, Performance, and Efficiency](https://longda.us/2025-07-16/2025-07-16-duxiaoman-database-selection/) (2025-07-16): Zhao Hui, head of Du Xiaoman's Technology Committee, shares their unified storage architecture practice: selecting OceanBase based on four cost advantages... - [China Unicom's ChatDBA Upgrades Its Vector Database: A Hands-On Comparison of Milvus, Elasticsearch, and OceanBase](https://longda.us/2025-07-09/2025-07-09-china-unicom-chatdba-vector-database/) (2025-07-09): China Unicom shares the journey of building ChatDBA, its intelligent database expert, explaining why it upgraded from MySQL+Milvus to the OceanBase vector... - [Handling Hundreds of Millions of New Records Daily: How BOSS Zhipin Built a High-Performance, Efficient Storage Solution on OceanBase](https://longda.us/2025-06-30/2025-06-30-boss-zhipin-high-performance-storage/) (2025-06-30): Facing hundreds of millions of new chat-log records every day, BOSS Zhipin compared products such as MySQL and ClickHouse before choosing OceanBase to build... - [OceanBase Vector Search at Lalamove: Exploration and Practice](https://longda.us/2025-06-25/2025-06-25-huolala-oceanbase-vector-search/) (2025-06-25): Lalamove shares its exploration and practice with OceanBase vector search: starting from pain points of its existing vector database—dynamic schemas, hybrid... - [OceanBase Vector Technology Tackles 360's Three Commercialization Pain Points, Accelerating AI-Driven Business Analytics by 80%](https://longda.us/2025-06-23/2025-06-23-360-oceanbase-vector-technology/) (2025-06-23): 360's Commercialization business line shares the application of OceanBase in scenarios such as real-time advertising reports and vector storage, solving... - [Zhihu's Large-Scale OceanBase Adoption and Joint Ecosystem Building](https://longda.us/2025-06-18/2025-06-18-zhihu-oceanbase-practice/) (2025-06-18): Zhihu's database lead shares the journey of deploying OceanBase in Zhihu's core scenarios, including multi-tenant isolation, the introduction of OBKV, the... - [NetEase Games Brings OceanBase into Its DB SaaS: Storage Cost Cut by 60%, Backup and Recovery 3x Faster](https://longda.us/2025-06-12/2025-06-12-netease-game-db-saas-oceanbase/) (2025-06-12): The NetEase Games DB SaaS platform brought in the OceanBase distributed database to address pain points such as high concurrency, data synchronization, and... - [Conquering the \"Four Mountains\": Qingdao Yuno's Distributed Database Upgrade Strategy on OceanBase for Pharma Retail](https://longda.us/2025-05-27/2025-05-27-pharma-retail-distributed-database/) (2025-05-27): Qingdao Yuno's journey of digital transformation in pharma retail: migrating from traditional databases to OceanBase to overcome architecture flexibility,... ### Miscellaneous (19) - [HashCorp Reading Notes](https://longda.us/2022-02-28/hashcorp-read-notes/) (2022-02-28): Reflections on a 10,000-word article about HashiCorp's open-source commercialization: thoughts on open source vs. enterprise tiers, channel partnerships,... - [My Tesla Suddenly Lost Power While Driving](https://longda.us/2022-02-26/tesla-is-bullshit/) (2022-02-26): How my Tesla suddenly lost power while driving: an accidental touch of the gear paddle disabled the front motor. A record of the fault, the remote data... - [Strolling Through Jiuzhaigou](https://longda.us/2021-10-10/jiuzhaigou/) (2021-10-10): A Jiuzhaigou travelogue: the National Day road-trip traffic jam from Chengdu to Jiuzhaigou, and a recommended walking route from Jianya to Nuorilang via the... - [My 10-Year Anniversary](https://longda.us/2020-06-07/10years/) (2020-06-07): Reflecting on a decade at Alibaba: from promising to stay five years to nearly ten. Gratitude for the platform's inclusiveness, the team's trust, and... - [The Rise of Huawei](https://longda.us/2020-04-30/huawei/) (2020-04-30): Reading notes on The Rise of Huawei: tracing the key decisions across Huawei's founding, growth, and survival phases, and reflecting on customer-first... - [A Two-Day Trip to Copenhagen](https://longda.us/2020-02-01/copenhagen/) (2020-02-01): A travelogue of a two-day trip to Copenhagen: buy the Copenhagen Card and enjoy the old town and its museums. Recommended spots include the Carlsberg... - [A Day Trip in Stockholm](https://longda.us/2020-01-30/stockholm/) (2020-01-30): A one-day trip through Stockholm on a Nordic tour: a guided visit to the City Hall and its dazzling gold-leaf Golden Hall and hand-painted Princess Hall,... - [Norway 3-Day Trip (3)](https://longda.us/2020-01-29/norway3/) (2020-01-29): A day-trip travelogue in Bergen: riding the funicular to overlook this World Heritage city, strolling the colorful wooden houses of the Hanseatic wharf,... - [Norway 3-Day Trip (2)](https://longda.us/2020-01-28/norway2/) (2020-01-28): Travelogue of the second leg of the Norway in a Nutshell tour: the train from Myrdal to Flam, the fjord cruise, and the changing winter and summer scenery... - [Norway 3-Day Trip (1)](https://longda.us/2020-01-27/norway/) (2020-01-27): A day-trip travelogue in Oslo: Vigeland Sculpture Park, the university, and the royal palace, plus the Norway in a Nutshell itinerary and tips for buying... - [A Trip to Helsinki](https://longda.us/2020-01-25/helsinki/) (2020-01-25): A one-day travelogue of Helsinki, Finland: the Sibelius Park organ sculpture, the Rock Church, the world's cheapest LV, and other Nordic culture and... - [A Trip to Rovaniemi](https://longda.us/2020-01-23/rovaniemi/) (2020-01-23): A winter travel diary of the Rovaniemi aurora trip in Finland: icebreaker cruise, aurora photography tour, and forest skiing, with Nordic Travels booking... - [New Year Wish](https://longda.us/2020-01-01/New-Year-Wish/) (2020-01-01): Reflections and a wish list for the new year 2020: looking back at last year's unfinished goals, then setting goals for the year ahead such as blogging,... - [Reflections on \"Peak\"](https://longda.us/2018-12-13/keyilianxi/) (2018-12-13): Reading notes on 'Peak': refuting the idea of innate genius and the simplistic ten-thousand-hour rule, summarizing a training method built on four elements... - [Reflections on \"Steve Jobs\"](https://longda.us/2018-10-08/qiaobusi/) (2018-10-08): Reflections on the biography 'Steve Jobs': exploring obsession versus collective wisdom, the techniques of a world-class marketing master, and how different... - [Reflections on the Cognitive Revolution](https://longda.us/2017-12-23/knowledgerevolution/) (2017-12-23): Notes on Li Shanyou's 'Cognitive Revolution' course: a walkthrough of core theories such as first principles, inductive and deductive thinking,... - [A Self-Guided Tour Around Taiwan](https://longda.us/2016-10-14/traveltaiwan/) (2016-10-14): A guide to a self-guided tour around Taiwan: handling the travel permit endorsement and entry permit, planning a half-island route, attractions in Kenting... - [A Short Talk on Job-Hopping](https://longda.us/2016-09-23/jump/) (2016-09-23): A short talk on job-hopping: analyzing the essence and trade-offs of changing jobs across dimensions such as salary, future career and company prospects,... - [Complaining About GoDaddy](https://longda.us/2016-08-10/godaddy/) (2016-08-10): A rant about GoDaddy deleting my personal hosting and wiping out five years of blog posts: a strong condemnation of their lack of accountability, plus a... ### Hands-on Practice (11) - [Vector Database Best Practices Distilled by OceanBase over Three Years](https://longda.us/2026-06-01/2026-06-01-vector-database-best-practices/) (2026-06-01): Two OceanBase vector database experts distill three years of hands-on PoC experience, systematically covering vector index selection, memory and disk... - [Stop Following the Crowd Blindly: The Core Principles Behind Seven Companies' Real-World Vector Database Choices](https://longda.us/2026-04-09/2026-04-09-vector-database-selection-principles/) (2026-04-09): This article reviews the real thinking and practice of seven companies—including Qihoo 360, China Unicom, Lalamove, Weibo, and Quwan Technology—in their... - [My Editor Job Has Been Replaced by AI — A seekdb Fork Table Capability Test Report](https://longda.us/2026-04-01/2026-04-01-seekdb-fork-table-test-report/) (2026-04-01): An experiment report on having an AI Agent automatically deploy seekdb and test its Fork Table capability. Through five scenarios, data isolation, version... - [Saving My Company $5,000 in Just Two Weekends: Refactoring a Knowledge Base from a Multi-Database Architecture to an AI-Native Database](https://longda.us/2025-12-25/2025-12-25-ai-native-database-knowledge-base-refactor/) (2025-12-25): In two weekends, the author refactored an enterprise knowledge base from a four-database stack (PostgreSQL + Elasticsearch + Pinecone + Redis) into a... - [A Guide to Using the OceanBase Vector Database](https://longda.us/2025-09-24/2025-09-24-oceanbase-vector-db-guide/) (2025-09-24): The official guide to using the OceanBase vector database: a detailed walkthrough of vector index types such as HNSW, HNSW_SQ, HNSW_BQ, IVF, and IVF_PQ,... - [Deploying the OceanBase Database in an Ubuntu Virtual Machine](https://longda.us/2025-09-19/2025-09-19-ubuntu-vm-deploy-oceanbase/) (2025-09-19): This article shares the complete process of deploying a standalone OceanBase Community Edition database via OBD's GUI in a WSL Ubuntu 22.04 virtual machine... - [A Practical Guide to Vector Databases for Personalized Recommendation in UGC Communities](https://longda.us/2025-08-25/2025-08-25-vector-db-ugc-recommendation/) (2025-08-25): A practical guide to building a personalized recommendation system for UGC communities on OceanBase's native vector capabilities: dual-vector user interest... - [A New Open-Source Community Development Experience in the Vibe Coding Era](https://longda.us/2025-07-28/2025-07-28-vibe-coding-opensource-community/) (2025-07-28): Drawing on the real experience of an OceanBase community developer, this article shows how to use Cursor together with the OceanBase MCP Server to create... - [OBCP V4 Official Mock Exam Analysis (with Answers)](https://longda.us/2025-07-22/2025-07-22-obcp-v4-mock-exam-analysis/) (2025-07-22): This article compiles the 50 mock questions publicly available on the OBCP V4 official site—covering single-choice, multiple-choice, and true/false... - [The Evolution of OceanBase Auto-increment Columns and Best Practices](https://longda.us/2025-07-21/2025-07-21-oceanbase-auto-increment-evolution/) (2025-07-21): This article traces the evolution of OceanBase auto-increment columns from 4.0.0 to 4.2.3, compares the principles and jump behavior of the ORDER and... - [OceanBase PoC Lessons Learned (Part 2) — AP Workloads](https://longda.us/2025-07-07/2025-07-07-oceanbase-poc-ap-business/) (2025-07-07): This article summarizes hands-on experience from OceanBase AP workload PoCs, centered on business migration strategy and database object design. It covers... ### News (11) - [OceanBase Community Monthly: Kernel and AI Tool Releases, Plus Events Across China](https://longda.us/2026-08-12/2026-08-12-oceanbase-community-monthly/) (2026-08-12): August 2026 OceanBase Community Monthly: AgentSeek 0.0.5–0.1.1, V4.4.2_CE_BP2, OBD v4.5.0, 15 certifications, plus WAIC, Suzhou, and Beijing events. - [OceanBase Community Monthly: Building Agents with a Closed Data Loop](https://longda.us/2026-07-09/2026-07-09-oceanbase-community-monthly/) (2026-07-09): July 2026 OceanBase Community Monthly: PowerMem 1.1.x and AgentSeek help developers ship agents with a closed data loop, plus certifications and city events. - [Build the Data Foundation for the Agent Era: Contribute to Easy Data x AI](https://longda.us/2026-07-02/2026-07-02-easy-data-ai-course-call/) (2026-07-02): Help co-build Easy Data x AI, an open introductory course on data foundations, AI agents, retrieval, memory, and practical AI applications. - [OceanBase Community Monthly: AgentSeek Launches as seekdb Delivers a 22× Streaming Throughput Gain](https://longda.us/2026-06-10/2026-06-10-oceanbase-community-monthly-agentseek-seekdb/) (2026-06-10): OceanBase's June roundup covers seekdb 1.3.0 async indexing with 22× streaming throughput, the AgentSeek agent toolkit, and obd/obdiag upgrades. - [Shanghai Meetup Highlights: Xinye's Cost Cuts, Suanzhi Future's Hybrid Search, and AgentSeek's One-Stop Agent Engineering](https://longda.us/2026-06-03/2026-06-03-shanghai-meetup-recap/) (2026-06-03): A recap of the Shanghai Agent Infra technical salon co-hosted by OceanBase and the LangChain Community: the debut of the AgentSeek enterprise-grade agent... - [OceanBase Community Monthly: Major Updates to PowerMem, OMS, and obdiag](https://longda.us/2026-05-21/2026-05-21-oceanbase-community-monthly-2026-05/) (2026-05-21): OceanBase Community Monthly for May 2026: PowerMem v1.0.0 integrates pyseekdb for embedded vector storage, OMS V4.2.13-CE adds ES, MongoDB, and ClickHouse... - [Shanghai, Here We Come! On 5/30, OceanBase × LangChain Join Forces to Debut \"AgentSeek\" and Define a New Paradigm for Enterprise Agent Development](https://longda.us/2026-05-13/2026-05-13-shanghai-oceanbase-langchain-meetup-preview/) (2026-05-13): On May 30, OceanBase teams up with the LangChain Community for an offline Meetup in Zhangjiang, Shanghai, where it will fully unveil AgentSeek, an... - [OceanBase Teams Up with Baidu ERNIE & PaddlePaddle, Qoder, and Multiple Hardware Vendors to Explore Production-Grade Agent Deployment](https://longda.us/2026-04-25/2026-04-25-oceanbase-paddle-qoder-agent-production/) (2026-04-25): On April 25, OceanBase joined forces with Baidu ERNIE & PaddlePaddle, Qoder, and several smart-hardware vendors to host the \"Storage and Compute Evolution... - [Live from the Community Carnival! Open Source, Open Ecosystem, Shared Success — a 13-Year-Old Takes Second Place in AI Coding!](https://longda.us/2026-02-06/2026-02-06-community-carnival-2026/) (2026-02-06): On January 31, the 2026 OceanBase Community Carnival was held in Shanghai, gathering over 260 developers. Through keynotes, panel discussions, AI Coding... - [Born for AI: Efficiently Build Your Agent and AI System Architecture with OceanBase seekdb](https://longda.us/2025-12-03/2025-12-03-seekdb-agent-ai-architecture/) (2025-12-03): After open sourcing its AI-native database seekdb, OceanBase launched a writing contest with prizes, inviting developers to deploy and experience seekdb, or... - [A Recap of the Hands-on AI Workshop at the OceanBase Annual Conference](https://longda.us/2025-11-28/2025-11-28-oceanbase-handson-ai-workshop/) (2025-11-28): A recap of the Hands-on AI Workshop at the OceanBase Annual Conference: hundreds of developers, guided by experts from LangChain, Dify, and OceanBase,... ### Product Deep Dive (11) - [Why OceanBase Built Lakebase](https://longda.us/2026-07-23/2026-07-23-why-we-build-lakebase/) (2026-07-23): Yanran (Han Fusheng) explains why OceanBase built Lakebase to unify multimodal data, hybrid search, and agent-ready access for enterprises. - [Designing a Lakehouse AI Database for Production Agents](https://longda.us/2026-07-08/2026-07-08-lakehouse-ai-database-design/) (2026-07-08): OceanBase CTO Rizhao (Yang Chuanhui) explains Lakebase, a lakehouse AI database for multimodal data, open compute, and production agents. - [OceanBase seekdb 1.3.0 Released: 22x Performance Gain, Jitter-Free P99](https://longda.us/2026-06-09/2026-06-09-seekdb-1-3-0-release/) (2026-06-09): OceanBase seekdb 1.3.0 is here, introducing an asynchronous index model based on Change Stream that decouples writes from index building. In streaming... - [seekdb 1.2.0 Released: Primary-Standby Disaster Recovery Goes Live, and Full-Database Cloning in Seconds Is Here](https://longda.us/2026-04-03/2026-04-03-seekdb-1-2-0-release/) (2026-04-03): seekdb 1.2.0 is officially released, bringing its first high-availability solution—a primary-standby asynchronous replication architecture supporting both... - [Giving OpenClaw Long-Term Memory — PowerMem 1.0.0 Officially Released](https://longda.us/2026-03-19/2026-03-19-powermem-1-0-0-release/) (2026-03-19): OceanBase's open-source intelligent memory system PowerMem 1.0.0 is officially released: a new pmem CLI operations plane and a Dashboard cognition plane,... - [From Vibe Coding to AI Agents — OceanBase seekdb Builds a Millisecond-Level Data Sandbox for the AI Era](https://longda.us/2026-03-03/2026-03-03-seekdb-ai-data-sandbox/) (2026-03-03): OceanBase seekdb 1.1.0 introduces the Fork Table feature. Based on copy-on-write and consistent snapshots, it creates logically independent,... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 2)](https://longda.us/2026-01-29/2026-01-29-unified-ai-data-stack-part2/) (2026-01-29): This article analyzes RAG's architectural evolution from Naive and Advanced to Modular RAG and its production pain points, and introduces PowerRAG — an... - [Goodbye to the Patchwork: A One-Stop Tech Stack for Memory, Retrieval, and the AI Data Engine (Part 1)](https://longda.us/2026-01-28/2026-01-28-unified-ai-data-stack-part1/) (2026-01-28): This article dissects the new database needs and pain points developers face in the AI era, and introduces OceanBase seekdb — a lightweight, multimodal,... - [A Deep Dive into the OceanBase Ecosystem Toolchain — OAT / obd / OCP / obshell](https://longda.us/2026-01-08/2026-01-08-oceanbase-ecosystem-tools/) (2026-01-08): Zhimin, the product owner for OceanBase ecosystem tools, takes a deep dive into the roles and relationships of the four operations and management tools —... - [A Developer's View of OceanBase's Open-Source AI Product Trio](https://longda.us/2025-12-26/2025-12-26-oceanbase-ai-products-developer-view/) (2025-12-26): An OceanBase engineer offers a developer's take on three open-source AI products—seekdb, PowerRAG, and PowerMem—dissecting the three big challenges of the... - [In the AI Era, Why Did OceanBase Open Source an AI-Native Database Like seekdb?](https://longda.us/2025-11-26/2025-11-26-why-oceanbase-opensource-seekdb/) (2025-11-26): Feng Zhongyan (Lao Ji), General Manager of OceanBase's Open Source Ecosystem, systematically answers three questions—why seekdb was open sourced, how it... ### Industry Insights (9) - [When AI Agents Wipe Databases, Databases Learn from Git](https://longda.us/2026-08-31/2026-08-31-agent-deletes-database-git/) (2026-08-31): After a Replit agent wiped production during a code freeze, Git-like database branches emerged as a safer way to isolate AI agent changes. - [Is AI Giving Rise to 'Marxism' in the Tech Industry?](https://longda.us/2026-08-10/2026-08-10-ai-marxism-socialism/) (2026-08-10): Palantir CEO Alex Karp called the AI industry Marxist. The real issue is who owns prompts, workflows, and memory when firms use models. - [LangChain \"Goes Off-Script\" and Builds a Database from Scratch?](https://longda.us/2026-05-18/2026-05-18-langchain-builds-database/) (2026-05-18): To solve the problem of exploding Agent trace data in LangSmith, LangChain built a distributed database, SmithDB, from scratch. This article unpacks its... - [7 Million People Watch AI Wipe a Database, and the Culprit Writes a Bizarre Confession](https://longda.us/2026-05-09/2026-05-09-ai-deletes-database-incident/) (2026-05-09): PocketOS's AI Agent, running in Cursor + Claude Opus, unilaterally deleted the Railway production database and its backups, causing an incident in 9 seconds... - [DeepMind CEO Interview: We're Just 4 Years and 3 Final Puzzle Pieces Away from AGI](https://longda.us/2026-05-09/2026-05-09-deepmind-ceo-agi-interview/) (2026-05-09): In a recent interview, Google DeepMind CEO Demis Hassabis predicts AGI could arrive by 2030 and pinpoints AI's three biggest gaps today: continual learning,... - [Talking with AI: How Do You Survive the AI Chaos?](https://longda.us/2026-04-25/2026-04-25-surviving-ai-era-conversation/) (2026-04-25): A survival guide distilled from a conversation with AI—covering the logic of big-tech layoffs, the predicament at each level from P6 to P9, a four-layer... - [Developers Cheer, Ordinary People Are Lost: After OpenClaw, Which Way for 'Usable AI'?](https://longda.us/2026-02-11/2026-02-11-usable-ai-after-openclaw/) (2026-02-11): Compiled from a panel discussion at the OceanBase Community Carnival, where guests from Eigent, Ant Bailing, Fellou, and others discuss the OpenClaw... - [Skills Arrive — Is Prompt Dead? In 2026, How Do We Build Controllable Thinking for Agents?](https://longda.us/2026-02-07/2026-02-07-skills-vs-prompt-agent-thinking/) (2026-02-07): A panel transcript from the OceanBase Community Carnival: experts from RAGFlow, FastGPT, Nowledge Labs, and OceanBase discuss where the RAG ecosystem is... - [Data-Driven Innovation and Transformation in the Pan-Internet Industry, and New Opportunities for Databases](https://longda.us/2025-06-16/2025-06-16-pan-internet-innovation-database-opportunities/) (2025-06-16): An exploration of how data-driven change is transforming the pan-internet industry and the new opportunities this creates for databases, covering technical... ### User Practices (1) - [Migrating from HBase to OceanBase: The Ultimate Solution for Real-Time Data Writes with Flink](https://longda.us/2026-04-24/2026-04-24-hbase-to-oceanbase-flink-migration/) (2026-04-24): This article introduces a real-time data-write solution based on Flink and OceanBase OBKV-HBase—fully compatible with the HBase API, supporting buffered...