The pg_createsubscriber tool, introduced in PostgreSQL 17, simplifies the process of converting physical standby servers into logical replicas, streamlining the transition from traditional streaming replication to the more flexible logical replication. This helps reduce downtime during major version upgrades or when setting up replication environment.
pg_createsubscriber is a tool that was introduced in PostgreSQL 17 to simplify and speed up the creation of a logical replica by converting an existing physical standby server. In this blog post, we’ll explore the motivation behind the introduction of this tool, how to use it, and how it is implemented, including its internal workings.
