Redis is an open source, in-memory data structure store. It can be used as a database, cache, and message broker. Redis supports various data structures such as strings, hashes, lists, sets, and sorted sets. It also provides advanced features like transactions, pub/sub messaging, Lua scripting, and automatic eviction of keys based on expiration time or memory usage limits. Redis is widely used in web applications for caching frequently accessed data and real-time messaging between different components of the application architecture.
