zeroCluster.ts

import { DatabaseCluster, CfnDBCluster } from "aws-cdk-lib/aws-rds";

export class ServerlessAuroraDB extends Construct {
    this.cluster = new DatabaseCluster(this, "AuroraCluster", {
      // If you're using Aurora PostgreSQL, the database engine must be running at least version 16.3, 15.7, 14.12, or 13.15.
      engine: DatabaseClusterEngine.auroraPostgres({
        version: AuroraPostgresEngineVersion.VER_15_8,
      }),
      ...,
      serverlessV2MinCapacity: 0.5,
      serverlessV2MaxCapacity: 1,
    });

    const cfnDbCluster = this.cluster.node.defaultChild as CfnDBCluster;
    cfnDbCluster.addOverride("Properties.ServerlessV2ScalingConfiguration.MinCapacity", 0);
    // This is not yet supported in CloudFormation as of writing this
    // The default is 5 minutes
    // cfnDbCluster.addOverride("Properties.ServerlessV2ScalingConfiguration.SecondsUntilAutoPause", 1800); // 30m