Crucial Exams

AWS Certified Developer Associate DVA-C02 Practice Question

Your application ingests thousands of events each second from 50 IoT devices. Each event record contains deviceId, eventType, eventTimestamp, and payload. The DynamoDB table uses deviceId as the partition key and eventTimestamp as the sort key, but device D-001 generates over 1,000 writes per second, triggering hot-partition throttling. Which partition-key strategy will distribute write load while still letting you query all events for a given device?

  • Create a GSI on eventType but leave the primary key unchanged.

  • Use eventTimestamp as the partition key and deviceId as the sort key.

  • Concatenate a hashed or random two-digit suffix (for example, deviceId#07) to the deviceId and use that string as the partition key; keep eventTimestamp as the sort key.

  • Keep deviceId as the partition key and eventTimestamp as the sort key.

AWS Certified Developer Associate DVA-C02
Development with AWS Services
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