A Media Streaming Company Collects Real-Time Data and Stores It

Multiple Choice

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