Replication lag

Everything You Need to Know About Replication Lag in PostgreSQL oldest replication slot lag If the Postgres setting hot_standby_feedback is turned on, long-running transactions on the standby may prevent replication progress Check for any long-running oldest replication slot lag Each read replica has its own physical slot on the source DB instance The slot keeps track of the oldest WAL that might be

slot and go Replication lag is the delay between the time when data is written to the primary database and the time when it is replicated to the standby