Learn Redis, the popular in-memory key-value store and data structure server
Redis is an amazing Open Source software that can serve various needs in a Web Application. It’s a NoSQL database, and in particular a key/value store. One of its special features is high performance, provided by being an in-memory database.
Redis is very flexible and can be used in many different ways - as a cache storage mechanism, a message broker, or a way to communicate between different processes and applications.