PostgreSQL: A Comprehensive Guide to PostgreSQL Streaming Replication
Introduction PostgreSQL, a powerful and open-source relational database management system, is renowned for its robustness, flexibility, and extensive feature set. According to DB-Engines , PostgreSQL is currently the fourth most popular database in the world and has risen quickly in recent years. It is also the second most popular open-source RDBMS, behind MySQL. One of PostgreSQL's most valuable features is streaming replication, which provides high availability, fault tolerance, and load balancing by maintaining multiple copies of a database on different servers. In this post, we'll explore what PostgreSQL streaming replication is, how it works, and the steps to set it up with a hot standby and heartbeat monitoring. What is PostgreSQL Streaming Replication? Streaming replication in PostgreSQL allows you to create a replica (or standby) server that continuously receives updates from a primary (or master) server. This replication method is asynchronous by default, but Postgr...