OceanBase Internals: Transactions, Replay, SQL Engine, and Unit Placement

OceanBase targets high availability and scalability in a shared-nothing cluster. The core engineering challenge is to make four critical subsystems work together with predictable…

January 17, 2026 · 8 min · 1517 words · Jack Yu

Understanding the CAP Theorem

The CAP theorem has become one of the hottest theorems in recent years; when discussing distributed systems, CAP is inevitably mentioned. However, I feel that I haven’t thoroughly…

December 20, 2017 · 3 min · 511 words · Jack Yu