How to Synchronize MySQL Databases for a Multi-Shop POS System?

Mysql Database Synchronization Between Two Databases

In a Java Point of Sale (POS) application with a MySQL backend, maintaining database synchronization between multiple shops and a host server is a crucial task. This article provides a comprehensive solution for achieving database replication.

Solution: MySQL Replication

MySQL replication offers a straightforward approach to synchronize databases. It involves setting up a master server for writing data and one or more slave servers for read operations. By following these guidelines, you can establish a stable and conflict-free replication setup:

• Master-Slave Structure:

  • Designate one server as the master for managing write operations.
  • Create one or multiple slave servers for handling read operations.

• Avoid Simultaneous Writes:

  • Prevent data insertion into the same tables on both master and slave servers to avoid primary key conflicts.

• Treat Slaves as Backups:

  • Consider slave servers as backups that receive data from the master and are not suitable for direct data writes.

• Monitoring and Troubleshooting:

  • Implement a monitoring system to ensure the health of your replication setup and resolve any issues promptly.

For detailed instructions on setting up MySQL replication, refer to the following resources:

• http://www.ghacks.net/2009/04/09/set-up-mysql-database-replication/
• http://dev.mysql.com/doc/refman/5.5/en/replication-howto.html
• http://www.lassosoft.com/Beginners-Guide-to-MySQL-Replication

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