Redis

Redis is an in-memory data structure store used as a database, cache, message broker, and streaming engine. Originally created as an open-source project, Redis provides sub-millisecond response times, making it the go-to solution for caching, session management, real-time analytics, and pub/sub messaging. Redis supports a rich set of data structures including strings, hashes, lists, sets, sorted sets, bitmaps, hyperloglogs, and streams. Redis Stack extends the core with JSON document support, full-text search (RediSearch), time series, probabilistic data structures, and vector search for AI applications. Redis Cloud provides fully managed Redis deployments on AWS, Azure, and Google Cloud with active-active geo-distribution, automatic scaling, and 99.999% uptime SLA. The platform is used by millions of developers worldwide as a critical component of application architectures.