Why is Redis Useful?
Redis uses a design where the data is always read and modified from the random access memory (RAM) on a computer. It can also be stored on a disk-- in an inappropriate format for random data access-- but only to reconstruct the data in memory after the system restarts.
his is why Redis can be considered both a store and a cache. We can use it to decrease data access latency, increase throughput, and ease the load off our relational or NoSQL database and application.
Other benefits of Redis include simple authentication: designed to be only accessed by trusted clients, and can be restricted to certain interfaces.
