Wednesday, October 23, 2013

PostgreSQL Streaming Replication Hot Standby

Streaming replication allows a standby server to stay up-to-date with primary. The standby connects to the primary, which streams WAL records to the standby as they're generated.

Hot standby is the term used to describe the ability to connect to the server and run read-only queries.

This method of replication is completely transparent to the client, it doesn't require any changes to database, allows query information from standby server and requires minimum administrative effort.