An application uses Amazon DynamoDB as its backend database. The application is experiencing high read traffic for a small set of popular items, leading to increased latency and higher costs due to consumed read capacity units. How can a solutions architect improve read performance and reduce database load with the LEAST application code changes?

Answer options:

Migrate the database to Amazon RDS.

Implement Amazon ElastiCache for Redis.

Implement Amazon DynamoDB Accelerator (DAX).

Increase the Provisioned Read Capacity Units (RCUs).

How to approach this question

Identify the need for a DynamoDB cache that requires minimal code changes.

Full Answer

C.Implement Amazon DynamoDB Accelerator (DAX).✓ Correct

Amazon DynamoDB Accelerator (DAX) is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement. Because it is API-compatible with DynamoDB, it requires minimal application code changes.

Common mistakes

Choosing ElastiCache, which requires significant code changes to implement the caching logic.

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