RDS for MySQL (Relational Database Service for MySQL) provides the high-performance and high-reliability relational database service. It supports three series, i.e., stand-alone basic version, dual high-availability version, and Raft financial version. It supports the standard database protocol by default and implements monitoring, automatic failover, data backup and recovery, instance management and other features. Furthermore, it meets the customers' higher requirements for data management and storage through the slow SQL statistics and diagnosis and reliable services, such as cross-domain hot instance groups.