DBS-C01 · Question #185
An online advertising company is implementing an application that displays advertisements to its users. The application uses an Amazon DynamoDB table as a data store. The application also uses a Dynam
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Question
An online advertising company is implementing an application that displays advertisements to its users. The application uses an Amazon DynamoDB table as a data store. The application also uses a DynamoDB Accelerator (DAX) cluster to cache its reads. Most of the reads are from the GetItem query and the BatchGetItem query. Consistency of reads is not a requirement for this application. Upon deployment, the application cache is not performing as expected. Specific strongly consistent queries that run against the DAX cluster are taking many milliseconds to respond instead of microseconds. How can the company improve the cache behavior to increase application performance?
Options
- AIncrease the size of the DAX cluster.
- BConfigure DAX to be an item cache with no query cache
- CUse eventually consistent reads instead of strongly consistent reads.
- DCreate a new DAX cluster with a higher TTL for the item cache.
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