Postgres logical replication concepts

A physical replication slot prevents a source DB instance from removing WAL data before it's consumed by all read replicas Each read replica has its own

Postgres logical replication concepts The solution is replication slots, a feature provided by Postgres that ensures the primary server only discards WAL records after they have been received by the

A physical replication slot prevents a source DB instance from removing WAL data before it's consumed by all read replicas Each read replica has its own

replication slot already exists restart_lsn will also be moved forward if possible For a physical replication slot, this function updates restart_lsn Share

It's about 10 tables in the schema, so that means 11 replication slots per subscriber cluster So in production could be up to 99 slots, let's

replication slot It is important to remove unused replication setups, since the underlying replication slots in PostgreSQL forces the server to keep all the data needed to

A replication slot exists solely on the instance that created it, and PostgreSQL does not replicate it on the standby servers As a result, after a failover or