Redis-001 Overview

Redis, a popular NoSQL database, is an in-memory, key-value store written in ANSI C, known for its high performance, scalability, and support for various data types.

Redis is used by major companies like Github, Twitter, and Alibaba for applications such as caching, messaging queues, and social networks. It supports data types like strings, hashes, lists, sets, and sorted sets, each with a rich set of commands.

Redis faces challenges like cache penetration and avalanches, which can be mitigated through strategies like pre-loading keys, using naming conventions, and employing Redis cluster for load balancing.