MySQL Replication & High Availability Guide

To achieve database replication and high availability in MySQL, the following methods can be used:

1. MySQL replication refers to the built-in replication feature that allows for database replication using either master-slave or master-master replication. Master-slave replication involves copying data from one MySQL server (master server) to another MySQL server (slave server), while master-master replication allows for bidirectional replication between two MySQL servers. By configuring the appropriate parameters and enabling binary logging, MySQL database replication can be achieved.
2. MySQL Cluster: MySQL Cluster is a high availability solution that achieves database availability by syncing data and distributing load across multiple MySQL servers. Software like MySQL Group Replication or Percona XtraDB Cluster can be used to implement a MySQL Cluster.
3. Utilizing database proxies: You can use database proxy software, such as ProxySQL or MaxScale, to achieve load balancing and failover for databases. Database proxies can monitor the status of database servers and automatically switch to a backup server in case of failure, enhancing the availability of the database.
4. Utilize high availability tools for databases: You can also use specialized high availability tools like MySQL Enterprise Edition or Percona Monitoring and Management to monitor the operation of databases, promptly detect and address failures, and ensure the high availability of databases.

Overall, to achieve database replication and high availability in MySQL, it is necessary to combine appropriate replication and clustering technologies, configure proper parameters, and utilize database proxies and high availability tools to ensure the stable operation and availability of the database.