Amazon ElastiCache allows you to seamlessly set up, run, and scale popular open-Source compatible in-memory data stores in the cloud. ... Amazon ElastiCache offers fully managed Redis and Memcached for your most demanding applications that require sub-millisecond response times.
Memorystore for Redis provides a fully managed in-memory data store service built on scalable, secure, and highly available infrastructure managed by Google. Use Memorystore to build application caches that provides sub-millisecond data access.
Varnish technology channels the power of caching to deliver performance, scalability and reliability for fast and flexible web and API content delivery. With HTTP and the Varnish Configuration Language (VCL), Varnish Cloud offers caching solutions to deliver all types of content and gain full control over how you deliver, monitor and customize your delivery.
An IMDG (in-memory data grid) is a set of networked/clustered computers that pool together their random access memory (RAM) to let applications share data structures with other applications running in the cluster.
