Longda's Interesting World

Distributed Databases & AI Agent Engineering Practice

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 shuttle bus, the Five-Color Pond, and the Shuzheng lakes. See the full post for details and examples.

Read more »

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 measured differences across storage types

Read more »

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 are organized.

Read more »

Notes on MySQL clustered and non-clustered indexes: InnoDB's primary-key-clustered storage, the advantages of covering indexes, and a comparison with MyISAM's physical row-pointer approach. See the body for more detail and examples.

Read more »

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 professional growth.

Read more »