How One Engineer Optimized Postgres Vacuum Without Downtime

In this episode, Lucas and Luna dig into a real-world Postgres performance crisis: a table with 200 million rows where autovacuum couldn't keep up, causing bloat and query slowdowns. They walk through how one engineer diagnosed the issue using pg_stat_user_tables, tuned vacuum and autovacuum settings, and introduced a custom vacuuming schedule using pg_cron — all without a single minute of downtime. Along the way, they explain why vacuuming matters, what 'dead tuples' are, and how to avoid common pitfalls like table bloat and transaction ID wraparound. If you're a developer or DBA dealing with a growing Postgres database, this episode gives you a concrete playbook to keep your database fast and healthy. Plus, Lucas and Luna share how listener support keeps the show ad-free. #Postgres #PostgreSQL #DatabasePerformance #Vacuum #Autovacuum #DeadTuples #TableBloat #PgCron #DatabaseTuning #SQL #BackendEngineering #DevOps #DBA #TechPodcast #FexingoBusiness #BusinessPodcast #EngineeringPodcast #SoftwareEngineering Keep every episode free: buymeacoffee.com/fexingo