What Is DDS?

Document Database Service (DDS), compatible with MongoDB, is a secure, high availability (HA) database service that is reliable, scalable, and easy to use. It provides functions such as one-click deployment, elastic capacity expansion, disaster recovery, backup, restoration, monitoring, and alarm reporting.

DDS has the following features:

• DDS automatically establishes the three-node replica set architecture. It supports fast deployment, high availability (HA) data storage, data redundancy, and failover.
• DDS provides sharded cluster instances comprised of a config node paired with multiple shards and mongos nodes. These clusters can be easily scaled up to enhance read and write performance.
• DDS lets you back up or restore a database from the management console in just a few clicks.
• DDS provides performance metrics and you can configure alarm notifications to make it easier to keep abreast of instance statuses.

For details about the compatible DB engines and versions, see Database Engine and Version.