What is Redis?
Redis is an open source, BSD licensed, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
Redis is a tool in the In-Memory Databases category of a tech stack.
Why developers like Redis
Performance
Super fast
Ease of use
In-memory cache
Advanced key-value cache
Open source
Easy to deploy
Stable
Free