AWS Certified Solutions Architect – Associate (SAA-C02) — Question 176

A database is on an Amazon RDS MySQL 5.6 Multi-AZ DB instance that experiences highly dynamic reads. Application developers notice a significant slowdown when testing read performance from a secondary AWS Region. The developers want a solution that provides less than 1 second of read replication latency.
What should the solutions architect recommend?

Answer options

• A. Install MySQL on Amazon EC2 in the secondary Region.
• B. Migrate the database to Amazon Aurora with cross-Region replicas.
• C. Create another RDS for MySQL read replica in the secondary Region.
• D. Implement Amazon ElastiCache to improve database query performance.

Correct answer: B

Explanation

The correct answer is B, as Amazon Aurora offers superior replication capabilities with lower latency across regions compared to RDS MySQL. Option A would not achieve the desired latency and requires more management overhead, while option C does not guarantee the same level of performance as Aurora's cross-Region replication. Option D focuses on caching rather than addressing read replication latency directly.