In-memory caching improves application performance by storing frequently accessed data items in memory, so that they can be retrieved without access to the primary data store. Properly leveraging caching can result in an application that not only performs better, but also costs less at scale. Amazon ElastiCache is a managed service that reduces the administrative burden of deploying an in-memory cache in the cloud.
Beyond caching, an in-memory data layer also enables advanced use cases, such as analytics and recommendation engines. This whitepaper lays out common ElastiCache design patterns, performance tuning tips, and important operational considerations to get the most out of an in-memory layer.
