How to scale an RDS instance
ApsaraDB RDS supports two scaling approaches: manually changing instance specifications and configuring automatic scaling.
Scaling methods at a glance
| Method | Description | Supported engines |
|---|---|---|
| Change specifications | Manually upgrade or downgrade CPU, memory, and storage | MySQL, PostgreSQL, SQL Server, MariaDB |
| Automatic performance scaling | Automatically scales compute resources based on load | MySQL |
| Automatic storage expansion | Automatically expands storage when available space drops below a threshold | MySQL, PostgreSQL |
Change specifications
Manually change the CPU, memory, storage capacity, or instance type of an existing RDS instance.
For step-by-step instructions, see the topic for your database engine:
Configure automatic scaling (MySQL)
RDS for MySQL supports two automatic scaling features that reduce manual intervention:
-
Configure automatic performance scaling — automatically adjusts compute performance.
-
Configure automatic storage expansion — automatically increases storage capacity.
Configure automatic storage expansion (PostgreSQL)
RDS for PostgreSQL supports automatic storage expansion, which increases storage capacity automatically.