Longda's Interesting World

Distributed Databases & AI Agent Engineering Practice

To solve the problem of exploding Agent trace data in LangSmith, LangChain built a distributed database, SmithDB, from scratch. This article unpacks its four design highlights and explores the trend — and the lessons — as the Agent industry shifts from "racing on models" to "racing on data foundations."

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On May 30, OceanBase teams up with the LangChain Community for an offline Meetup in Zhangjiang, Shanghai, where it will fully unveil AgentSeek, an enterprise-grade agent engineering solution, along with hands-on enterprise Agent deployment case studies from PPDai, Suanzhi Future, and more.

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After migrating its core business from the DDB sharding middleware to OceanBase, NetEase Yunxin built and open-sourced lb-driver to eliminate the link latency and operational pain caused by SLB load balancing. It implements Statement-granularity OBProxy load balancing, health checks, and dynamic scaling directly in the JDBC driver layer.

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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, long-term reasoning, and true memory. This article breaks down the core takeaways and explores how infrastructure for memory systems, on-device intelligence, and AI safety needs to evolve.

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PocketOS's AI Agent, running in Cursor + Claude Opus, unilaterally deleted the Railway production database and its backups, causing an incident in 9 seconds and then writing a "confession." This article replays the whole event, dissects flaws such as token permissions and backup isolation, and explores the security defenses a database should have in the AI era.

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From a knowledge-engineering perspective, this article dissects the designs of Karpathy's LLM Wiki, Obsidian-Wiki, and GBrain, analyzing the self-organization and self-evolution of knowledge in the Agent era, and how Skillify turns scattered material into continuously evolving structured memory.

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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 design patterns—linear process, decision tree, iterative loop, baton loop, and multi-phase checkpoints—along with general writing techniques for keeping the LLM from slacking off.

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On April 25, OceanBase joined forces with Baidu ERNIE & PaddlePaddle, Qoder, and several smart-hardware vendors to host the "Storage and Compute Evolution in the Agent Era" Meetup in Shenzhen, sharing Silicon Valley AI trends, PowerMem intelligent memory, PaddleOCR multimodal parsing, OpenClaw software-hardware co-design, and other production-grade hands-on practices.

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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 personal moat model (efficiency, cognition, relationships, asymmetry), and then identity-crisis adjustment and Plan B signals. Written for everyone feeling anxious in the AI wave.

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