Part 4: MariaDB vs. MySQL: Storage Engines & Thread Pool Showdown
← Previous Chapter: Part 3 — Primary Key Showdown: UUIDv7 vs. Snowflake | Series Hub Answer-first: MariaDB is no longer a drop-in replacement for MySQL. MySQL 8.4/9.0 dominates Cloud-Native ecosystems (AWS Aurora) with InnoDB tuning, binary JSONB O(1) updates, and Vector AI. Conversely, MariaDB 11.x excels on Bare-Metal/Kubernetes via native ThreadPool (50k+ conns), Galera 4 zero-lag multi-master, and MyRocks LSM storage compressing disk by 70%. 1. Executive Summary & The End of the “Drop-in Replacement” Era For over a decade following the 2009 fork, the software industry treated MariaDB as an interchangeable, binary drop-in replacement for MySQL. Database administrators could swap binaries with zero schema modifications, identical SQL dialects, and shared replication streams. ...