DVA-C02 · Question #193
A company is building an application for stock trading. The application needs sub-millisecond latency for processing trade requests. The company uses Amazon DynamoDB to store all the trading data that
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Question
A company is building an application for stock trading. The application needs sub-millisecond latency for processing trade requests. The company uses Amazon DynamoDB to store all the trading data that is used to process each trading request. A development team performs load testing on the application and finds that the data retrieval time is higher than expected. The development team needs a solution that reduces the data retrieval time with the least possible effort. Which solution meets these requirements?
Options
- AAdd local secondary indexes (LSIs) for the trading data.
- BStore the trading data in Amazon S3, and use S3 Transfer Acceleration.
- CAdd retries with exponential backoff for DynamoDB queries.
- DUse DynamoDB Accelerator (DAX) to cache the trading data.
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