Exam AWS Certified Developer Associate topic 1 question 326 discussion

Exam question from Amazon's AWS Certified Developer Associate

Question #: 326
Topic #: 1

[All AWS Certified Developer Associate Questions]

A developer is creating an application that will store personal health information (PHI). The PHI needs to be encrypted at all times. An encrypted Amazon RDS for MySQL DB instance is storing the data. The developer wants to increase the performance of the application by caching frequently accessed data while adding the ability to sort or rank the cached datasets.

Which solution will meet these requirements?

A. Create an Amazon ElastiCache for Redis instance. Enable encryption of data in transit and at rest. Store frequently accessed data in the cache.
B. Create an Amazon ElastiCache for Memcached instance. Enable encryption of data in transit and at rest. Store frequently accessed data in the cache.
C. Create an Amazon RDS for MySQL read replica. Connect to the read replica by using SSL. Configure the read replica to store frequently accessed data.
D. Create an Amazon DynamoDB table and a DynamoDB Accelerator (DAX) cluster for the table. Store frequently accessed data in the DynamoDB table.

Show Suggested Answer

Suggested Answer: A 🗳️

by k1kavi1 at Nov. 26, 2022, 5:32 p.m.

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DrCloud

Highly Voted 2 years, 6 months ago

Selected Answer: A

key point: "ability to sort or rank the cached datasets" When deciding between Memcached and Redis, here are a few questions to consider: Are you looking for more advanced data types, such as lists, hashes, bit arrays, HyperLogLogs, and sets? If so, use Redis. Does sorting and ranking datasets in memory help you, such as with leaderboards? If so, use Redis. https://docs.aws.amazon.com/whitepapers/latest/scale-performance-elasticache/memcached-vs.-redis.html

upvoted 10 times

pancman

2 years, 4 months ago

Very informative, thank you!

upvoted 1 times

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rcaliandro

Most Recent 1 year, 11 months ago

Selected Answer: A

by caching frequently accessed data while adding the ability to sort or rank the cached datasets. Which solution will meet these requirements? To cache data we can use ElasticCache, since we neeed to sort data we have to use Redis rather than Memcached. A is the correct answer.

upvoted 2 times

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