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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.
  • 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
Parent topic: Product Series