This document describes how MySQL database replication works by having updates first saved to the master database and binary log, then transmitted to the relay log on the slave server, and finally replayed on the slave database to keep it in sync with the master. The workflow involves saving updates to the master database and binary log, transmitting them to the slave's relay log, and replaying them on the slave database.

1. Replicate a MySQL database

2. Failover to Standby Server

3. How It works?

4. Replication Internal Workflow
Updates are:
1. Saved to database.
2. Saved to Binary log.
3. Transmitted to Relay log.
4. Replayed on database.
Master
Binary Log Relay Log
Slave
1 2
3
4