Remote Dictionary Server, or Redis, is a speedy, open-source, and advanced key-value data store. Salvatore Sanfilippo, the original inventor of Redis, sought to increase the scalability of his firm. Therefore, he launched an initiative to create Redis, a database, message broker, and queue currently widely used.
Redis popularized the concept of a system that can act as a store and a cache by employing a design where data is permanently altered and read from the main computer memory. The activity of warehousing data in stock is known as caching, and it is done to serve data more quickly in the future.
Redis has a data model quite different from a relational database management system (RDBMS). User instructions do not define a query that the database engine should run but rather particular actions on abstract data types. As a result, it allows for quick retrieval in the future without using secondary indexes or other standard RDBMS capabilities.
The Redis implementation makes extensive use of the fork system call to duplicate the data-holding process, allowing the parent process to proceed serving clients. In contrast, the child process copies the data to disc. Python, Java, C/C#/C++, PHP, Perl, Node.js, Go, JavaScript, and many other programming languages and protocols are supported by Redis.