A company is planning to use a cache service for their application.An important requirement is that trying to recover data lost in cache is an expensive affair for the company, which they would want to avoid. Which of the following should be used for this purpose?

Answer options:

A.Amazon SQS queues
B.Amazon ElastiCache – Memcached
C.Amazon ElastiCache – Redis
D.Amazon Lambda

Answer – C
Choose Redis if you want high availability. The below table gives the comparison.
Option A is incorrect since this is a queuing service available from AWS.
Option B is incorrect since this does not offer high availability.
Option D is incorrect since this is a serverless computing service available from AWS.
For more information on the comparison for the Cache engines, please refer to the below URL-
https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/SelectEngine.html