Help Center/ Relational Database Service_RDS for MySQL/ FAQs/ Read Replicas and Read/Write Splitting/ Does RDS for MySQL Support Sharding and Read/Write Splitting?
Updated on 2026-10-08 GMT+08:00
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Does RDS for MySQL Support Sharding and Read/Write Splitting?

Yes. RDS for MySQL supports sharding and read/write splitting.

  • RDS works with Distributed Database Middleware (DDM) to provide sharding, allowing you to easily scale up your database. For details, see Sharding Database and Table Data of an RDS for MySQL Instance.
  • Up to five read replicas can be created for a primary/standby or single-node instance. Read replicas and the DB instance are connected through separate IP addresses.

    If you want to access your instance and read replicas using a unified read/write splitting address, enable read/write splitting first.

Parent Topic: Read Replicas and Read/Write Splitting