This article describes how to set up database replication in MySQL. MySQL replication allows you to have an exact copy of a database from a master server on another server (say we can call it as slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync.

This is not a backup method or policy because an accidentally issued DELETE or ALTER command will also be carried out on the slave; but replication can help protect against hardware failures though.

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