ExpertMedium1 markMultiple Choice
AWS SAP-C02 · Question 40 · Domain 3.3: Performance Improvement
An application uses Amazon DynamoDB. A specific read-heavy query is causing throttling and high costs. The data changes infrequently. How can the architect improve performance and reduce costs with minimal code changes?
An application uses Amazon DynamoDB. A specific read-heavy query is causing throttling and high costs. The data changes infrequently. How can the architect improve performance and reduce costs with minimal code changes?
Answer options:
A.
Migrate the data to Amazon ElastiCache for Redis.
B.
Implement Amazon DynamoDB Accelerator (DAX).
C.
Increase the Read Capacity Units (RCUs) on the table.
D.
Use Amazon CloudFront to cache the database queries.
How to approach this question
Identify the caching solution native to DynamoDB.
Full Answer
B.Implement Amazon DynamoDB Accelerator (DAX).✓ Correct
DAX is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement.
Common mistakes
Choosing ElastiCache, which requires rewriting the data access layer.
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