advanced~4h
PostgreSQL Specifics — MVCC, JSONB & VACUUM
PostgreSQL has unique features that set it apart from other databases. Understanding these deeply is essential for PostgreSQL users.
Learning objectives
- Explain why MVCC lets readers and writers avoid blocking each other, in terms of what a row version actually is.
- Explain what VACUUM is cleaning up, and why skipping it causes real, measurable table bloat.
- Decide when a JSONB column is the right choice versus a fully normalized set of relational columns.
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PostgreSQL Specifics — MVCC, JSONB & VACUUM