DBS-C01 · Question #77
DBS-C01 Question #77: Real Exam Question with Answer & Explanation
The correct answer is D: Use DynamoDB Accelerator to offload the reads. https://docs.amazonaws.cn/en_us/amazondynamodb/latest/developerguide/DAX.html "Applications that are read-intensive, but are also cost-sensitive. With DynamoDB, you provision the number of reads per second that your application requires. If read activity increases, you can increa
Question
An ecommerce company is using Amazon DynamoDB as the backend for its order-processing application. The steady increase in the number of orders is resulting in increased DynamoDB costs. Order verification and reporting perform many repeated GetItem functions that pull similar datasets, and this read activity is contributing to the increased costs. The company wants to control these costs without significant development efforts. How should a Database Specialist address these requirements?
Options
- AUse AWS DMS to migrate data from DynamoDB to Amazon DocumentDB
- BUse Amazon DynamoDB Streams and Amazon Kinesis Data Firehose to push the data into
- CUse an Amazon ElastiCache for Redis in front of DynamoDB to boost read performance
- DUse DynamoDB Accelerator to offload the reads
Explanation
https://docs.amazonaws.cn/en_us/amazondynamodb/latest/developerguide/DAX.html "Applications that are read-intensive, but are also cost-sensitive. With DynamoDB, you provision the number of reads per second that your application requires. If read activity increases, you can increase your tables' provisioned read throughput (at an additional cost). Or, you can offload the activity from your application to a DAX cluster, and reduce the number of read capacity units that you need to purchase otherwise."
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