Effective April 12, 2022, the prices of read-only ApsaraDB RDS for PostgreSQL instances that use cloud disks are reduced.
Effective date
April 12, 2022
Price reductions
| Billing method | Reduction |
|---|---|
| Subscription | ~45% |
| Pay-as-you-go | ~17% |
Example: A subscription read-only instance priced at USD 100/month before April 12, 2022 costs approximately USD 55/month after the reduction: 100 × (1 - 45%) = 55.
About read-only instances
Read-only instances offload read traffic from the primary instance, increasing read throughput and application throughput. During creation, ApsaraDB RDS replicates data from the secondary instance to the read-only instance. After creation, the read-only instance contains the same data as the primary instance, and all subsequent updates are synchronized immediately.
The following diagram shows the topology of a primary instance and its read-only instances.
What's next
To take advantage of the reduced prices, create a read-only ApsaraDB RDS for PostgreSQL instance.