Overview

This document provides best practices for Huawei Cloud Document Database Service (DDS) and guides you through using DDS to best suit your business needs.

Service	Reference	Overview
Document Database Service	Common Methods for Connecting to a DDS Instance	This section describes common DDS connection methods.
	How Do Replica Sets Achieve High Availability and Read/Write Splitting?	This section describes how to connect to a replica set instance to achieve high availability.
	Sharding	This section describes how to set cluster shards to improve database performance.
	How Do I Improve DDS Performance by Optimizing SQL Statements?	This section describes DDS usage suggestions.
	How Do I Prevent the Mongos Cache Problem?	This section describes how to avoid the mongos route cache defect of the cluster.
	How Do I Solve the High CPU Usage Issue?	This section describes how to troubleshoot high CPU usage.
	Creating a User and Granting the Read-Only Permission to the User	This section describes how to use IAM to grant read-only permissions to DDS.

Next topic: Common Methods for Connecting to a DDS Instance

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