Question 540
An architecture review recommends this solution: Evaluate on-demand capacity or auto scaling where appropriate and check hot partition keys. The motivating situation is: A DynamoDB table receives unpredictable read request bursts causing throttling during seasonal peaks. Which principle would a reviewer use to defend this design?
Explanation
Correct Answer
This principle explains why the prescribed control is appropriate for the described requirement. The matching design action is: Evaluate on-demand capacity or auto scaling where appropriate and check hot partition keys. The expected supporting evidence is: Burst replay avoids throttling while partition-level demand remains within supported constraints.
Incorrect Answers
Workload service calls repeatedly cross paid network boundaries without quantified need. The stated evidence instead indicates: Capacity planning ignores demand spikes or hot keys that concentrate requests.
Unsupported drivers or unsuitable instance networking features cap throughput. The stated evidence instead indicates: Capacity planning ignores demand spikes or hot keys that concentrate requests.
Misses from different edge caches repeatedly burden the same origin. The stated evidence instead indicates: Capacity planning ignores demand spikes or hot keys that concentrate requests.