The journal catalogues entries under three active topics. Each entry is filed under its most specific heading; use the archive to scan everything chronologically, or pick a topic below.
MySQL
Internals, memory, query planning, replication — the long-running subject of this journal.
Linux
The operating layer beneath the database. Swap, io and the Performance Schema’s Linux-facing instruments.
Postgres
PostgreSQL and its neighbourhood. Configuration, tuning, operational notes, the occasional border-war with MySQL conventions.
New topics are added when there are three entries that demand one. Not before.