Part 06 · Transactions and Concurrency Control

MVCC in PostgreSQL

MVCCxminxmaxTuple versionsVisibility

Readers don't block writers because every update writes a new row version. xmin, xmax, snapshots and visibility rules, seen in real pages.

⏱ 6 min · Station 53 of 123

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The route is mapped; the full walkthrough arrives here soon.