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#Internals

— 1 post

Jan 14, 2026 · 14m

PostgreSQL Internals: MVCC, VACUUM, and HOT Updates

How Postgres actually stores rows — tuples, xmin/xmax, HOT updates, table bloat, and why VACUUM is the most misunderstood command in your database.

PostgreSQLDatabasePerformance
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P palakorn .dev

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