What is the purpose of setting up MySQL dual-server hot backup?

The main purposes of MySQL dual-machine hot standby are as follows:

1. Improve system availability: By using MySQL dual-server hot standby, the system can quickly switch servers in case of a failure, preventing service interruption caused by a single point of failure.
2. Data backup and recovery: MySQL dual-machine hot standby can achieve real-time data backup and quick data recovery, ensuring the security and integrity of the data.
3. Load balancing: When the system experiences heavy load, traffic can be distributed to different servers using MySQL dual hot backup to achieve load balancing and improve system performance.
4. Decrease system maintenance costs: Implementing MySQL dual-machine hot backup can reduce system maintenance costs, minimize the impact of system failures on business operations, and enhance the stability and reliability of the system.