Amazon ElastiCache Overview

Amazon ElastiCache is a fully managed, in-memory data store and cache in the cloud. It can provide sub-millisecond latency to power real-time applications.

The ElastiCache service improves the performance of web applications by allowing you to retrieve information from fast, managed, in-memory data stores. Using Amazon ElastiCache, you can add an in-memory layer to your infrastructure in a matter of minutes by using the AWS Management Console.

ElastiCache automatically detects and replaces failed nodes, reducing the overhead associated with self-managed infrastructures and provides a resilient system, improving the application load times. Through integration with CloudWatch, it provides enhanced visibility into key performance metrics.

ElastiCache supports two open-source in-memory engines:

1. Redis

   1. ElastiCache for Redis is a Redis-compatible in-memory service that is fully managed, scalable, and secure - making it an ideal candidate to power high-performance use cases such as Web, Mobile Apps, Gaming, Ad-Tech, and IoT.

   2. Both single-node and up to 15-shard clusters are available, enabling scalability to up to 3.55 TiB of in-memory data.

   3. Read more here.  

2. Memcached

   1. ElastiCache is protocol compliant with Memcached

   2. popular tools that you use today with existing Memcached environments will work seamlessly with ElastiCache.