PostgreSQL: PG Failover Slots (pg_failover_slots)

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A new PostgreSQL blog post/announcement has been posted!

EDB is pleased to announce the release of PG Failover Slots (pg_failover_slots). This database extension is released as open source software under the PostgreSQL license and is for anyone who has logical replication publications on Postgres databases that are also part of a Streaming Replication architecture.

PG Failover Slots avoids the need for logical replication subscribers to reseed their logical replication tables when the logical replication publisher is part of a physical streaming replication architecture and a new Standby gets promoted to Primary.

Since the replication slot used by logical replication is only maintained on the Primary node, downstream subscribers will not receive any new changes from the newly promoted Primary until the slot is created on the newly promoted Primary. Picking up logical replication changes from the newly promoted standby is unsafe because the information that includes which data...

Get the full details here: PostgreSQL: PG Failover Slots (pg_failover_slots)

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