Redis Cache Interview Questions and Answers

Ques 1. What is Redis Cache?

Redis is an open-source, advance key value data store and cache. It is also referred as a data structure server which keys not only contains strings, but also hashes, sets, lists, and sorted sets.

Ques 2. What is the meaning of Redis?

Redis stands for REmote DIctionary Server.

Ques 3. How is Redis different from other databases?

Redis is a NoSQL, Opensource, in-memory data-structure store. It follows the principle of key-value store.

It is extremely fast, persistent, portable and supports many languages such as C, C++, C#, Clojure, Common Lisp, D, Dart, Erlang, Go, Haskell, Haxe, Io, Java, JavaScript (Node.js), Julia, Lua, Objective-C, Perl, PHP, Pure Data, Python, R, Racket, Ruby, Rust, Scala, Smalltalk and Tcl.

Ques 4. In which language Redis is written?

Redis is written in ANSI C and mostly used for cache solution and session management. It creates unique keys for store values.

Ques 5. What is the usage of Redis?

Redis is a special key-value store database that can function as a NoSQL database or as a memory-cache store to improve performance when serving data that is stored in system memory.