Citizen check-in latency spikes while overall DynamoDB table metrics look only moderately busy. How should performance monitoring help?
Select an answer to reveal the explanation.
Short Explanation
Average table health can hide one red-hot partition key. CloudWatch metrics and traces help you find that hotspot in the check-in path and fix the key design.
Full Explanation
Performance monitoring should locate bottlenecks such as hot DynamoDB partitions that degrade a subset of keys while aggregate metrics look acceptable. CloudWatch metrics, Contributor Insights, and tracing guide remediation of partition keys or capacity. Ignoring signals, recreating tables blindly, or reducing visibility during incidents delays recovery. Monitoring-driven diagnosis is required for Task 2.5.