A TencentDB instance is a standalone database environment running in Tencent Cloud. It includes multiple databases created by users and can be accessed using the same tools and applications as those for a standalone database instance.
TencentDB for PostgreSQL supports the following types of instances:
|Instance Type||Definition||Architecture||Visible in the Instance List||Feature|
|Primary instance||An instance that can be read from and written to||High-availability edition||Yes||The primary instance can associate with read-only replicas to realize read/write separation.|
|Read-only replica||An instance that can only be read from||Single-node read-only||Yes|