The open source, in-memory Redis (for REmote DIctionary Server) key/value store is generally used as an application cache or quick-response database. Redis offers unsurpassed speed, dependability, and performance since it saves data in memory instead of on a disk or solid-state drive (SSD).
Salvatore Sanfilippo, the first Redis developer, sought to increase the flexibility of his Italian firm. So naturally, therefore, he launched the project. From there, he created Redis, which today has a variety of applications like a database, cache, and queue.
Redis has response rates that are less than one millisecond, enabling millions of queries per second for real-time applications in sectors. Redis has been rated the "Most Loved" database by Stack Overflow, which currently makes it one of the most well-liked open-source engines.
Given that all Redis data is in memory, retrieving it quickly and efficiently is possible, resulting in lightning-fast performance for both read and write operations.
Redis allows writing typically complex code in smaller, more concise chunks.
Data can be duplicated to many replica servers using Redis' asynchronous, synchronous replication feature and primary-replica architecture.
Redis provides a single node main or clustered topology for its primary-replica architecture. This enables you to develop extremely reliable systems with stable performance.
A thriving community backs open source project Redis. Redis is based on open standards and has a wide variety of clients. Therefore, there is no vendor or technology lock-in.
Redis provides a wide range of data structures to satisfy your application demands, unlike other key-value data stores offering only a small selection.
Redis can queue jobs that otherwise may take web clients longer than normal to complete.
Countless companies leverage Redis in their tech stacks, including Uber, Airbnb, Pinterest, Shopify, Twitter, and GitHub.
Because Redis is an in-memory database, it is quick. In comparison to random disk I/O, memory access is several times quicker. Redis is also one of the few databases that can accommodate millions of operations per second.
Redis is built in ANSI C and doesn't require additional dependencies to run on most POSIX platforms, including Linux, BSD, and Mac OS X. The two operating platforms where Redis is being created and evaluated the most are Linux and OS X.