AWS Certified Data Engineer Associate DEA-C01 Practice Question
A company runs a MySQL database on Amazon RDS with Provisioned IOPS storage. Backend microservices perform high-volume transactional writes, while BI analysts use Amazon QuickSight to issue complex, long-running read queries that occasionally slow the production workload. The team wants to isolate analytical reads, keep writer performance stable, and minimize additional cost or application changes for the microservices. Which approach meets these requirements?
Enable Amazon RDS Multi-AZ on the existing instance and direct Amazon QuickSight to query the standby DB instance.
Create one or more Amazon RDS MySQL read replicas in the same Region and connect Amazon QuickSight to a replica endpoint for reporting queries.
Migrate the database to Amazon Aurora MySQL and use Aurora Serverless v2 to automatically scale read capacity.
Increase the Provisioned IOPS allocation and upgrade the DB instance class to a larger memory-optimized tier.
Read replicas in Amazon RDS for MySQL provide separate, asynchronously updated copies of the primary instance that can service read-only traffic. Pointing Amazon QuickSight at a read-replica endpoint offloads long analytical queries from the writer instance, protecting OLTP performance. Multi-AZ deployments improve availability but the standby is not readable. Simply increasing IOPS or instance size does not isolate workloads. Migrating to Aurora Serverless adds complexity and cost and is unnecessary for the stated goal.
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AWS Certified Data Engineer Associate DEA-C01
Data Store Management
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