https://ivanluminaria.com/en/tags/vacuum/Recent content in Vacuum on Ivan LuminariaHugoenTue, 24 Mar 2026 08:03:00 +0100https://ivanluminaria.com/en/posts/postgresql/vacuum-autovacuum-postgresql/Tue, 24 Mar 2026 08:03:00 +0100https://ivanluminaria.com/en/posts/postgresql/vacuum-autovacuum-postgresql/<p>A couple of years ago I was asked to look at a production PostgreSQL instance that &ldquo;slows down every week&rdquo;. Always the same pattern: Monday is fine, Friday is a disaster. Someone restarts the service over the weekend and the cycle starts again.</p> <p>Database around 200 GB. Main tables occupying nearly three times their actual data size. Queries falling into sequential scans where they shouldn&rsquo;t have been. Response times climbing day after day.</p>