ApsaraDB MyBase for MySQL provides two editions: High-availability Edition and Master-replica Edition. This topic describes Master-replica Edition.

ApsaraDB MyBase for MySQL Master-replica Edition supports an architecture that contains a primary instance and multiple read-only instances. To construct a single-node architecture, you can create a Master-replica Edition instance that has zero read-only instances. To construct a multi-node architecture, you can create up to five read-only instances for a Master-replica Edition instance based on your business requirements. Each read-only instance contains only one node. Read-only instances can be used for disaster recovery to ensure the high availability and high stability of your service. ApsaraDB MyBase for MySQL Master-replica Edition also allows you to manage your resources in a flexible manner.

Master-replica Edition

Supported versions of the MySQL database engine

  • MySQL 8.0
  • MySQL 5.7

Benefits

  • Cost-effectiveness

    Read-only instances are single-node instances and are all accessible. This helps you reduce costs that are incurred due to idle resources and ensure the high availability of your service.

  • High availability
    The specifications of read-only instances of an ApsaraDB MyBase for MySQL Master-replica Edition instance can be different from the specifications of the primary instance. You can create read-only instances that use higher specifications than the primary instance to provide a strong read capability. When the primary instance fails to run as expected, the system promotes a read-only instance that has low workloads or that has the same specifications as the primary instance to be the new primary instance.
    Note An ApsaraDB MyBase for MySQL Master-replica Edition instance that contains one read-only instance cannot ensure the high availability of your service. To ensure the high availability of your service, create at least two read-only instances.