Reducing Read Pressure with RDS Read/Write Splitting

RDS for MySQL and RDS for PostgreSQL support read replicas to offload read traffic from primary instances.

To offload read pressure on the primary DB instance, you can create one or more read replicas in the same region as the primary instance. These read replicas can process a large number of read requests and increase application throughput. You need to separately configure connection addresses for the primary instance and each read replica in your applications so that all read requests can be sent to read replicas and write requests to the primary instance.