This topic introduces DRDS databases.

In theory, DRDS databases are similar to MySQL and Oracle databases.

In practice, DRDS provides a complete set of API operations, allowing business applications to directly connect to DRDS databases. This is the same as using a single-instance database.

In physical storage, the underlying storage of DRDS uses one or more ApsaraDB RDS for MySQL instances, and a DRDS database consists of the databases provided by one or more ApsaraDB RDS for MySQL instances.

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The operations of database management on a single instance includes creating databases, viewing database details, configuring read/write splitting, managing tables, managing database shards, configuring whitelists, importing data, and viewing monitoring information.