DVA-C02 Domain 4: Troubleshooting and Optimization

A company needs to reduce DynamoDB hot partitions. Which option meets the requirement with the LEAST implementation effort? reduce DynamoDB hot partitions.

Multiple choice — select one answer

Answer choices

  1. a. CloudWatch alarms on Lambda metrics
  2. b. AWS X-Ray
  3. c. Scan entire table per request
  4. d. Better partition key design

Architectural breakdown & explanation

High-cardinality partition keys spread load.

Correct answer(s): d. Better partition key design

Exam domain: Domain 4: Troubleshooting and Optimization (18% weight on the official guide).

Official documentation & study links

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