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8 pages in this section.
A conceptual tour of why PostgreSQL leaves dead row versions behind, how vacuum reclaims that space, and the mental model tying autovacuum tuning, wraparound safety, and bloat remediation together.
Understand how PostgreSQL's VACUUM command reclaims space from dead row versions, updates visibility maps, and prevents table bloat.
Understand PostgreSQL transaction ID wraparound, monitor datfrozenxid age, and prevent database shutdown with vacuum freezing.
Optimize PostgreSQL vacuuming to prevent bloat, wraparound, and index-only scan regressions. Learn to tune autovacuum, manage transactions, and respond to bloat.
A single-page roundup of every highlight bullet from the 7 pages in the Vacuum & Bloat section, grouped by source page so you can scan all 41 takeaways without opening each article individually.