AWS Certified Solutions Architect – Associate (SAA-C03) — Question 731

A company has a mobile game that reads most of its metadata from an Amazon RDS DB instance. As the game increased in popularity, developers noticed slowdowns related to the game's metadata load times. Performance metrics indicate that simply scaling the database will not help. A solutions architect must explore all options that include capabilities for snapshots, replication, and sub-millisecond response times.

What should the solutions architect recommend to solve these issues?

Answer options

• A. Migrate the database to Amazon Aurora with Aurora Replicas.
• B. Migrate the database to Amazon DynamoDB with global tables.
• C. Add an Amazon ElastiCache for Redis layer in front of the database.
• D. Add an Amazon ElastiCache for Memcached layer in front of the database.

Correct answer: C

Explanation

Amazon ElastiCache for Redis is the correct choice because it provides sub-millisecond response times and supports both data replication and snapshotting. Amazon ElastiCache for Memcached does not support replication or snapshots, making it unsuitable for these requirements. Migrating the database to Amazon Aurora or Amazon DynamoDB would involve complex migrations and does not address the caching requirement as directly as Redis.