The Ultimate Redis 101

Redis is one of the most popular data stores in the world and is packed with features.

Here are 8 simple steps that can help you understand the fundamentals of Redis.

What is Redis?

Redis (Remote Dictionary Server) is a multi-modal database that provides sub-millisecond latency. The core idea behind Redis is that a cache can also act as a full-fledged database.

Redis Adoption

High-traffic internet websites like Airbnb, Uber, Slack, and many others have adopted Redis in their technology stack.

How Redis Changed the Database Game?

Redis supports main memory read/writes while still supporting fully durable storage. Read and writes are served from the main memory but the data is also persisted to the disk. This is done using snapshots (RDB) and AOF.

Redis Data Structures

Redis stores data in key-value format. It supports various data structures such as strings, bitmaps, lists, sets, sorted sets, hash, JSON, etc.

Basic Redis Commands

Some of the most used Redis commands are SET, GET, DELETE, INCR, HSET, etc. There are many more commands available.

Redis Modules

Redis modules are add-ons that extend Redis functionality beyond its core features. Some prominent modules are RediSearch, RedisJSON, RedisGraph, RedisBloom, RedisAI, RedisTimeSeries, RedisGears, RedisML, and so on.

Redis Pub/Sub

Redis also supports even-driven architecture using a publish-subscribe communication model.

Redis Use Cases

Top Redis use cases are Distributed Caching, Session Storage, Message Queue, Rate Limiting, High-Speed Database, etc.