AWS Certified Solutions Architect – Associate (SAA-C02) — Question 65

An application running on AWS uses an Amazon Aurora Multi-AZ deployment for its database. When evaluating performance metrics, a solutions architect discovered that the database reads are causing high I/O and adding latency to the write requests against the database.
What should the solutions architect do to separate the read requests from the write requests?

Answer options

• A. Enable read-through caching on the Amazon Aurora database.
• B. Update the application to read from the Multi-AZ standby instance.
• C. Create a read replica and modify the application to use the appropriate endpoint.
• D. Create a second Amazon Aurora database and link it to the primary database as a read replica.

Correct answer: C

Explanation

Creating a read replica allows the application to direct read requests to the replica, thereby offloading them from the primary database and reducing I/O contention. Options A and B do not effectively separate read and write traffic, while option D involves unnecessary complexity by creating an additional database instance instead of leveraging a read replica.