Exam AWS Certified Database - Specialty topic 1 question 293 discussion

Exam question from Amazon's AWS Certified Database - Specialty

Question #: 293
Topic #: 1

[All AWS Certified Database - Specialty Questions]

An online retailer uses Amazon DynamoDB for its product catalog and order data. Some popular items have led to frequently accessed keys in the data, and the company is using DynamoDB Accelerator (DAX) as the caching solution to cater to the frequently accessed keys. As the number of popular products is growing, the company realizes that more items need to be cached. The company observes a high cache miss rate and needs a solution to address this issue.

What should a database specialist do to accommodate the changing requirements for DAX?

A. Increase the number of nodes in the existing DAX cluster.
B. Create a new DAX cluster with more nodes. Change the DAX endpoint in the application to point to the new cluster.
C. Create a new DAX cluster using a larger node type. Change the DAX endpoint in the application to point to the new cluster.
D. Modify the node type in the existing DAX cluster.

Show Suggested Answer

Suggested Answer: C 🗳️

by rdiaz at March 26, 2023, 4:27 p.m.

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rdiaz

Highly Voted 2 years, 2 months ago

Selected Answer: C

Larger nodes can enable the cluster to store more data in memory, reducing cache misses and improving overall application performance of the application. You can't modify the node types on a running DAX cluster. Instead, you must create a new cluster with the desired node type. https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DAX.cluster-management.html#DAX.cluster-management.scaling

upvoted 7 times

Mintwater

2 years, 2 months ago

Scaling a DAX cluster There are two options available for scaling a DAX cluster. The first option is horizontal scaling, where you add read replicas to the cluster. The second option is vertical scaling, where you select different node types.

upvoted 1 times

cnmc

2 years ago

why do you consistently spread misinfo on the answers... The nodes contain the same set of data... If you scale them horizontally you simply increase throughput. Larger node type is required when you have cache misses

upvoted 3 times

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DanShone

Most Recent 1 year, 8 months ago

Selected Answer: C

Create a new DAX cluster using a larger node type - Vertical scaling https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DAX.cluster-management.html#DAX.cluster-management.scaling

upvoted 2 times

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