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Understanding Database Replication For Beginners
A beginner guide to database Replication using PostgreSQL
Database replication is a crucial aspect of database management. I’ll explain what database replication is, why it’s important, and how to implement it using PostgreSQL as our primary database management system (DBMS).
What is Database Replication
This is simply the process of creating and maintaining one or more copies of a database on separate servers. This is to ensure data redundancy, improve performance, and enhance fault tolerance. Replication involves copying data from one database (the source) to one or more target databases, keeping them synchronized in real-time or near-real-time.
There are several types of database replication, each designed to address specific requirements:
Master-Slave Replication: In this setup, one server (the master) manages write operations, while one or more servers (the slaves) replicate data from the master for read operations.
Master-Master Replication: In this configuration, multiple servers act as both masters and slaves simultaneously. Each server can accept both read and write operations, making it suitable for distributed systems.
