Last updated: 2017-07-17 11:57:23PDF
Currently, the cloud database provides the following instance types:
Master instance: This instance can be purchased directly. It has all the features of cloud database.
Master instance (dedicated) (currently not supported): This is the database instance you apply for within the dedicated cluster in Dedicated Database Cluster mode. It has all the features of cloud database.
Disaster recovery instance (currently not supported): This instance is deployed remotely (different availability zones) with real-time (async) synchronized data as the master instance, and is usually used for database disaster recovery. It only has partial cloud database features.
Temporary instance (currently not supported): This is a temporary instance generated by rollback, and is used for verifying data after rollback. You can switch the verified temporary instance into master instance.
Read-only instance (currently not supported): You can only read data from such instance. A read-only instance cannot exist alone, and must belong to a master instance. A read-only instance only acquires data through synchronization with the master instance, and is invisible in the instance list.