Add lesson 41: Vacuum and bloat#101
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Part of #6 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Adds Vacuum and bloat (roadmap item
02-vacuum-and-bloat) — the new Module 10: Expert & operations.Summary
Why MVCC leaves dead tuples behind, how VACUUM reclaims them, and how autovacuum and fillfactor keep tables from bloating.
Check
One
query-returnscheck (fillfactor-set) — the learner sets a table fillfactor, verified via pg_class.reloptions.Verified end-to-end against a non-superuser Postgres 16.
npm run lessons:validate(34/34) andnext buildboth pass.Part of #6
🤖 Generated with Claude Code