postgres-impl-logical-replication

To set up logical replication, you automate the creation of publications and subscriptions while applying row filters for selective data. This allows fine-grained control over exactly what information replicates between databases.

Yes, you can configure PostgreSQL logical replication for tables without primary keys by adjusting the replica identity settings. This handles updates and deletes properly when standard primary key identification is unavailable.

Automated logical replication setup requires PostgreSQL version 15, 16, or 17. You also need Claude Code integration to execute the configuration commands and manage the publication and subscription workflows.

Logical replication differs from physical replication by copying data changes based on publication and subscription models rather than block-level file changes. This allows selective data replication using row filters and column lists across different database instances.

Row filters in PostgreSQL publications require careful handling of replica identity settings, especially for tables without primary keys. Limitations include ensuring filtered rows match subscription criteria and managing update operations correctly.