Updated on 2025-08-20 GMT+08:00

Does RDS for MySQL Support Read/Write Splitting?

Yes. For details, see Table 1.

Table 1 RDS read/write splitting

Database

Read/Write Splitting

Database Proxy

Remarks

RDS for MySQL

Supported

Supported

Prerequisites: You have obtained the permissions required for read/write splitting. To apply for the permissions, submit a service ticket.

Procedure: See Enabling Read/Write Splitting.

Function:

  • If read/write splitting is enabled and there is no read replica, read and write requests are automatically routed through the read/write splitting address to the primary instance.
  • If read/write splitting is enabled and there are read replicas, RDS automatically routes write requests through the read/write splitting address to the primary instance and read requests to each read replica by user-defined weights.

Constraints: See Suggestions on Using Database Proxy.