Examtopics

AWS Certified Solutions Architect - Associate

  • Topic 1 Question 711

    An ecommerce company runs its application on AWS. The application uses an Amazon Aurora PostgreSQL cluster in Multi-AZ mode for the underlying database. During a recent promotional campaign, the application experienced heavy read load and write load. Users experienced timeout issues when they attempted to access the application.

    A solutions architect needs to make the application architecture more scalable and highly available.

    Which solution will meet these requirements with the LEAST downtime?

    • Create an Amazon EventBridge rule that has the Aurora cluster as a source. Create an AWS Lambda function to log the state change events of the Aurora cluster. Add the Lambda function as a target for the EventBridge rule. Add additional reader nodes to fail over to.

    • Modify the Aurora cluster and activate the zero-downtime restart (ZDR) feature. Use Database Activity Streams on the cluster to track the cluster status.

    • Add additional reader instances to the Aurora cluster. Create an Amazon RDS Proxy target group for the Aurora cluster.

    • Create an Amazon ElastiCache for Redis cache. Replicate data from the Aurora cluster to Redis by using AWS Database Migration Service (AWS DMS) with a write-around approach.

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