Group Introduction

Overview

For a DDM instance, its nodes can be divided into different groups to expand its service capabilities. There are two types of node groups, read-only and read/write, and they are responsible for handling read-only and read/write requests, respectively.

Read-only and read/write groups use the same data. When there are a large number of concurrent requests, read-only groups handle complex queries or extract data offline from the primary RDS DB instance or its read replicas to reduce response time and provide faster access.

It is easy to use node groups without the need of establishing complex links or synchronizing data.

The node group function is only available for whitelisted users. To use this function, submit a service ticket first.