Using PostgreSQL Logical Replication to Maintain an Always Up-to

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The WAL in a Postgres instance is shared among all tables and databases on that instance When at least one replication slot exists, Postges

Allow you to replicate data out of Postgres · Use the write-ahead log as the source of changes · Use logical replication slots to send out So, this happened again In a slightly different way, , even though the replication slot for the standby was missing, it was still in-sync

t-slot accessories Also, replication slots on a given standby persist the promotion of that standby to a primary This means that in the event of a primary DB instance failover or When this slot should be active, because you have a secondary site configured using that slot, look for the PostgreSQL logs for the secondary site, to view why