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Updated on 2025-03-19 GMT+08:00
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RDS for MariaDB Product Series

Table 1 and Table 2 list different DB instance types and their function comparisons of RDS for MariaDB.

Table 1 DB instance types

DB Instance Type

Description

Notes

Advantages

Scenarios

Single

A single-node architecture is more cost-effective than a primary/standby DB pair.

If a fault occurs on a single instance, the instance cannot recover in a timely manner.

Different from primary/standby DB instances that have two database nodes, a single DB instance has only one node, greatly reducing costs. If the node fails, the restoration will take a long time. Therefore, single DB instances are not recommended for sensitive services that have high requirements on database availability.
  • Personal learning
  • Microsites
  • Development and testing environment of small- and medium-sized enterprises

Primary/Standby

An HA architecture. A pair of primary and standby DB instances shares the same IP address.
  • When a primary instance is being created, a standby instance is provisioned synchronously to provide data redundancy. The standby instance is invisible to you after being created.
  • If the primary instance fails, a failover occurs, during which database connection is interrupted. If there is a replication delay between the primary and standby instances, the failover takes an extended period of time. The client needs to be able to reconnect to the instance.

The standby node of a primary/standby DB instance is only used for failover and restoration. It does not provide services. The performance of single DB instances is similar to or even higher than primary/standby DB instances because standby nodes cause extra performance overhead.
  • Production databases of large and medium enterprises
  • Applications for the Internet, Internet of Things (IoT), retail e-commerce sales, logistics, gaming, and other industries
Table 2 Function comparisons

Function

Single

Primary/Standby

Number of nodes

1

2

Specifications

vCPUs: a maximum of 64

Memory: a maximum of 256 GB

Storage: a maximum of 4,000 GB

Final specifications on the console may differ slightly.

vCPUs: a maximum of 64

Memory: a maximum of 256 GB

Storage: a maximum of 4,000 GB

Final specifications on the console may differ slightly.

Monitoring and alarms

Supported

Supported

Security group

Supported

Supported

Backup and restoration

Supported

Supported

Parameter settings

Supported

Supported

SSL

Supported

Supported

Log management

Supported

Supported

Read replicas (which need to be created)

Supported

Supported

SQL audit

Supported

Supported

DBA Assistant

Supported

Supported

Manual primary/standby switchover

Not supported

Supported

Instance class change

Supported

Supported

Storage scale-up

Supported

Supported
Parent topic: Product Series