What Redis is?

Redis (Remote Dictionary Server) is a fast, open-source, in-memory key-value data store that may be used as a database, cache, message broker, and queue. Salvatore Sanfilippo, the original Redis developer, began the project while attempting to increase the scalability of his Italian firm. Redis now delivers sub-millisecond response times, enabling millions of requests per second for real-time Gaming, Ad-Tech, Financial Services, Healthcare, and IoT applications. Redis is a popular choice for caching, session management, gaming, leaderboards, real-time analytics, geospatial, ride-hailing, chat/messaging, media streaming, and pub/sub-apps. Many languages have Redis bindings, including ActionScript, C, C++, C#, Chicken Scheme, Clojure, Common Lisp, D, Dart, Erlang, Go, Haskell, Haxe, Io, Java, JavaScript (Node.js), Julia, Lua, Objective-C, OCaml, Perl, PHP, Pure Data, Python, R, Racket, Ruby, Rust, Scala, Smalltalk, and Tcl.