Mark Callaghan is a database engineer whose work has shaped how MySQL runs at web scale. At Facebook he worked on RocksDB and MyRocks, the RocksDB-based storage engine that delivered roughly 2x better compression and half the write amplification of InnoDB for some of Facebook’s largest MySQL tiers. Today he works as an independent consultant, and his blog smalldatum is a go-to source for careful, reproducible benchmarks of MySQL, MariaDB, Postgres, and storage engines.
Mark Callaghan
Database performance engineer behind MySQL at Facebook, MyRocks, and the long-running smalldatum benchmarking blog.