> For the complete documentation index, see [llms.txt](https://gchandra.gitbook.io/big-data-and-tools-with-nosql/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gchandra.gitbook.io/big-data-and-tools-with-nosql/nosql/redis/overview.md). # Overview Redis (Remote Dictionary Server) is an in-memory data structure store. Primarily prioritizes **Consistency** and **Partition Tolerance** when configured in a distributed setup (like Redis Cluster). **Redis** is categorized as a **key value store** within the NoSQL database types. **Key Features:** * **Speed:** Redis stores data in the RAM, making it extremely fast. * **Persistence Options**: Provides options to save data to disk, ensuring durability even after restarts or crashes. * **Scalability**: Can scale horizontally with Redis Cluster, distributing data across multiple nodes. * **Wide Use Cases:** This is ideal for scenarios requiring quick data access, such as caching, session management, real-time analytics, and gaming leaderboards. * **Advanced Features**: Supports advanced features like transactions, pub/sub messaging systems, Lua scripting, and more. * **Atomic Operations:** Supports transactions and atomic operations. * **Data Structures**: Supports many data structures, such as