Redis is an open-source, in-memory data structure store that is used as a database, cache, and message broker. It supports various data structures such as strings, hashes, lists, sets, and sorted sets, and provides advanced features like transactions, pub/sub messaging, Lua scripting, and more. Redis is commonly used in web applications for caching frequently accessed data, as it provides fast response times and low latency. It has clients available in multiple programming languages and can be deployed on-premises or in the cloud.
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