Help Center/ Relational Database Service_RDS for PostgreSQL/ FAQs/ Read Replicas and Read/Write Splitting/ Does RDS for PostgreSQL Support Read/Write Splitting?
Updated on 2025-06-24 GMT+08:00
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Does RDS for PostgreSQL Support Read/Write Splitting?

Yes. For details, see Table 1.

Table 1 RDS for PostgreSQL read/write splitting

Database

Read/Write Splitting

Database Proxy

Remarks

RDS for PostgreSQL

Supported with client drivers

Not supported

After read replicas are created, separately configure connection addresses of the primary DB instance and each read replica on your applications so that all read requests can be sent to read replicas and write requests to the primary DB instance.

For details about RDS for PostgreSQL read replicas, see Introduction to Read Replicas.

For details about how to implement read/write splitting, see Using Client Drivers to Implement Failover and Read/Write Splitting.
Parent Topic: Read Replicas and Read/Write Splitting