Package: postgresql-12-pg-failover-slots Source: pg-failover-slots Version: 1.2.0-1.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 100 Depends: postgresql-12, libc6 (>= 2.4), libpq5 (>= 9.0~) Homepage: https://github.com/EnterpriseDB/pg_failover_slots/ Priority: optional Section: database Filename: pool/main/p/pg-failover-slots/postgresql-12-pg-failover-slots_1.2.0-1.pgdg22.04+1_amd64.deb Size: 43276 SHA256: b6e86ef21ddc4b261185ba79d2ee9121ca329575d6cce9d7c875c4becb88f167 SHA1: 7426547270af133089546611fc79a55cab925c5f MD5sum: 7ebe6d2fe686486812b4eebf1dc33699 Description: High-availability support for PostgreSQL logical replication This extension is for anyone with Logical Replication Slots on Postgres databases that are also part of a Physical Streaming Replication architecture. . Since logical replication slots are only maintained on the primary node, downstream subscribers don't receive any new changes from a newly promoted primary until the slot is created, which is unsafe because the information that includes which data a subscriber has confirmed receiving and which log data still needs to be retained for the subscriber will have been lost, resulting in an unknown gap in data changes. PG Failover Slots makes logical replication slots usable across a physical failover using the following features: . - Copies any missing replication slots from the primary to the standby - Removes any slots from the standby that aren't found on the primary - Periodically synchronizes the position of slots on the standby based on the primary - Ensures that selected standbys receive data before any of the logical slot walsenders can send data to consumers