DB Instance Introduction

Currently, RDS DB instances are classified into the following types:

  • Single

  • Primary/Standby

  • Cluster

Different series support different DB engines and instance specifications.

Table 1 DB instance types

DB Instance Type

Description

Scenarios

Single

Uses a single-node architecture. More cost-effective than the mainstream primary/standby DB instances.

  • Personal learning

  • Microsites

  • Development and testing environment of small- and medium-sized enterprises

Primary/Standby

Uses an HA architecture with one master node and one slave node.

The primary and standby DB instances share the same IP address and can be deployed in different AZs.

  • Production databases of large- and medium-sized enterprises

  • Applications for the Internet, Internet of Things (IoT), retail e-commerce sales, logistics, gaming, and other industries

Cluster

Uses the Microsoft Always On architecture with one master node, one slave node, and up to five read-only nodes. It features higher availability, reliability, and scalability.

  • Finance industry

  • Internet industry

  • Hotel industry

  • Online education

last updated: 2024-11-08 14:19 UTC - commit: aae1b12bfa160248d933bc69155302800af0d0fd