You are developing an application that consists of the following architecture.
· A set of EC2 Instances hosting a web layer
· A database hosting a MySQL instance
You need to add a layer that can be used to ensure that the most frequently accessed data from the database is fetched in a more fast and efficient manner from the database. Which of the following can be used to accomplish this requirement?
 

Answer options:

A.An SQS queue to store the frequently accessed data
B.An SNS topic to store the frequently accessed data
C.A Cloudfront distribution to store the frequently accessed data
D.A Elasticache instance to store the frequently accessed data

Answer – D
The AWS Documentation mentions the following.
Amazon ElastiCache offers fully managed Redis and Memcached. Seamlessly deploy, run, and scale popular open source compatible in-memory data stores. Build data-intensive apps or improve your existing apps` performance by retrieving data from high throughput and low latency in-memory data stores. Amazon ElastiCache is a popular choice for Gaming, Ad-Tech, Financial Services, Healthcare, and IoT apps.
Option A is incorrect because this is a messaging service.
Option B is incorrect because this is a notification service.
Option C is incorrect because this is a web distribution service.
For more information on Amazon ElastiCache, please refer to the below URL-
https://aws.amazon.com/elasticache/