About a year ago, I blogged about logical replication improvements in PostgreSQL version 16. PostgreSQL 16 was a really good release for logical replication improvements, with performance-critical features like parallel apply, providing replication origin for supporting bi-directional replication, and allowing a standby server to be a publisher. Please refer to the old blog post for more details on version 16 replication-related features.

PostgreSQL 17 also includes a number of significant improvements for logical replication. The enhancements are geared towards improving the usability of logical replication and meeting high-availability (HA) requirements. In this blog we are going to discuss some of the key logical replication features added to PostgreSQL 17; we won’t be covering all the new features in this blog so there will likely be more than one blog in this series.

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