AWS Certified Database – Specialty — Question 215

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?

Answer options

• 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.

Correct answer: C

Explanation

The correct answer is C because creating a new DAX cluster with a larger node type allows for increased capacity and performance to handle the growing number of popular items. Option A does not address the need for a larger node type; option B does not specifically address the need for larger node types either; option D does not provide the necessary scaling to accommodate the increased cache requirements.