Package: postgresql-14-pg-failover-slots Source: pg-failover-slots Version: 1.0.1-2.pgdg22.04+1 Architecture: amd64 Maintainer: Debian PostgreSQL Maintainers Installed-Size: 97 Depends: libc6 (>= 2.4), libpq5 (>= 9.0~), postgresql-14, postgresql-14-jit-llvm (>= 14) Homepage: https://github.com/EnterpriseDB/pg_failover_slots/ Priority: optional Section: database Filename: pool/main/p/pg-failover-slots/postgresql-14-pg-failover-slots_1.0.1-2.pgdg22.04+1_amd64.deb Size: 42180 SHA256: 9a03c3e3fa11df56bb22fc1b3e620fea3eed178d4c5faa50d5508331ee2ffde7 SHA1: f7bda9eed60c6608482302e65543f5c638d0980c MD5sum: 7e79fa23bcdc89ae2d3cadc209827ccb 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