half-synchronous

Mike Chen's Internet Architecture

Jun 29, 2023 · Databases

Database Master‑Slave Synchronization and Consistency Solutions

This article explains why master‑slave replication is needed in high‑concurrency scenarios, describes the consistency challenges it introduces, and presents three practical solutions—half‑synchronous replication, database middleware, and cache‑key recording—detailing their principles, advantages, and drawbacks.