ProxySQL

MySQL scalability is the ability to increase database throughput — reads per second, writes per second, or data volume — without rewriting your application. The critical distinction: read scaling (adding replicas) and write scaling (sharding or distributed SQL) require completely different architectural approaches. Choosing the wrong path creates technical debt that takes months to unwind. This guide walks through every stage of the MySQL scaling ladder, from buffer pool tuning through TiDB migration, with Go-specific implementation patterns at each step. ...