Postgres Replication Slots: Confirmed Flush LSN vs. Restart LSN
Read OriginalThis technical article delves into PostgreSQL replication slots, explaining the distinct roles of the confirmed_flush_lsn and restart_lsn attributes. It details how these LSNs track consumer progress and handle concurrent transactions, providing crucial insights for troubleshooting replication issues, managing WAL retention, and avoiding production pitfalls in logical replication and CDC setups.
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