Amazon ElastiCache makes it easy for you to deploy, scale, and run a cloud-based in-memory cache that is protocol-compliant with Memcached. ElastiCache improves the performance of web applications and reduces the load on your databases by retrieving data from a fast, managed, Memcached-compatible, in-memory caching system, instead of relying entirely on disk-based storage. It can significantly improve throughput for read-heavy or compute-intensive workloads including Social Networking, Mobile and Social Gaming, E-Commerce Sites, Media Sites, and Recommendation Engines.
In order to make ElastiCache an even better value, we are adding a full suite of Reserved Cache Node options -- Light, Medium, and Heavy with both 1 and 3 year terms. See the ElastiCache pricing for additional information. Reserved Cache Nodes can provide savings of up to 70% compared to On-Demand pricing. More information, including pricing, is available on our new Reserved Cache Nodes page.
Finally, you'll also find useful information in the recorded version of our "Turbo-charge Your Apps Using Amazon ElastiCache" webinar: