enum InstanceUpdateBehaviour

Language	Type name
.NET	Amazon.CDK.AWS.RDS.InstanceUpdateBehaviour
Go	github.com/aws/aws-cdk-go/awscdk/v2/awsrds#InstanceUpdateBehaviour
Java	software.amazon.awscdk.services.rds.InstanceUpdateBehaviour
Python	aws_cdk.aws_rds.InstanceUpdateBehaviour
TypeScript (source)	aws-cdk-lib » aws_rds » InstanceUpdateBehaviour

The orchestration of updates of multiple instances.

Example

declare const vpc: ec2.Vpc;
const cluster = new rds.DatabaseCluster(this, 'Database', {
  engine: rds.DatabaseClusterEngine.auroraMysql({ version: rds.AuroraMysqlEngineVersion.VER_3_01_0 }),
  writer: rds.ClusterInstance.provisioned('Instance', {
    instanceType: ec2.InstanceType.of(ec2.InstanceClass.BURSTABLE3, ec2.InstanceSize.SMALL),
  }),
  readers: [rds.ClusterInstance.provisioned('reader')],
  instanceUpdateBehaviour: rds.InstanceUpdateBehaviour.ROLLING, // Optional - defaults to rds.InstanceUpdateBehaviour.BULK
  vpc,
});

Members

Name	Description
BULK	In a bulk update, all instances of the cluster are updated at the same time.
ROLLING	In a rolling update, one instance after another is updated.

---

BULK

In a bulk update, all instances of the cluster are updated at the same time.

This results in a faster update procedure. During the update, however, all instances might be unavailable at the same time and thus a downtime might occur.

---

ROLLING

In a rolling update, one instance after another is updated.

This results in at most one instance being unavailable during the update. If your cluster consists of more than 1 instance, the downtime periods are limited to the time a primary switch needs.