Package: postgresql-17-pg-failover-slots Source: pg-failover-slots Version: 1.1.0-2.pgdg20.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 103 Depends: postgresql-17, postgresql-17-jit-llvm (>= 10), 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-17-pg-failover-slots_1.1.0-2.pgdg20.04+1_amd64.deb Size: 44996 SHA256: 2619aad85d9f115615f03b66467e9cac946f90293b6f06f2f762c5e895303e96 SHA1: ff755c3988c02f7ec5a8ec388c10bb3402627e0b MD5sum: 56bf2427da35b0b5a174c3f2437ed750 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