You are working on a mobile application that will be using AWS ElastiCache for caching application data to reduce latency & improve throughput. The management team has asked you to evaluate both in-memory cache supported by AWS ElastiCache engines – Memcached and Redis. Which of the following features are available only with Memcached which you should consider while developing the application? (Select Two)

Answer options:

A.Simple caching model
B.Pub/Sub capability support.
C.Multithreaded performance with utilization of multiple cores
D.Data replication to multiple AZ’s.Data persistence

Correct Answer – A, C
AWS ElastiCache Memcached cache engine supports multithreaded performance using multiple cores & a simple caching model.
Options B & D are incorrect as these features are available with the AWS ElastiCache Redis Cache engine.
For more information on Comparison between Memcached and Redis, refer to the following URLs-
https://aws.amazon.com/elasticache/redis-vs-memcached/
https://d0.awsstatic.com/whitepapers/performance-at-scale-with-amazon-elasticache.pdf