Which database should a solutions architect recommend’?

A media streaming company collects real-time data and stores it in a disk-optimized database system. The company is not getting the expected throughput and wants an in-memory database storage solution that performs faster and provides high availability using data replication.

Which database should a solutions architect recommend’?
A . Amazon RDS for MySQL
B . Amazon RDS for PostgreSQL
C . Amazon ElastiCache for Redis
D . Amazon ElastiCache for Memcached

View Answer

Answer: C

Explanation:

https://aws.amazon.com/elasticache/redis-vs-memcached/ In-memory databases on AWS

Amazon Elasticache for Redis

Amazon ElastiCache for Redis is a blazing fast in-memory data store that provides submillisecond latency to power internet-scale, real-time applications. Developers can use ElastiCache for Redis as an in-memory nonrelational database. The ElastiCache for Redis cluster configuration supports up to 15 shards and enables customers to run Redis workloads with up to 6.1 TB of in-memory capacity in a single cluster. ElastiCache for Redis also provides the ability to add and remove shards from a running cluster. You can dynamically scale out and even scale in your Redis cluster workloads to adapt to changes in demand

https://aws.amazon.com/nosql/in-memory/

https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-add-availability-zone.html

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html