What is Redis?
Redis is a very fast non-relational database that stores a mapping of keys to five different types of values.
Redis supports in-memory persistent storage on disk, replication to scale read performance, and client-side sharding 1 to scale write performance.
Difference with other databases
Redis data structures
Commands used on STRING values
Commands used on LIST values
Commands used on SET values
Commands used on HASH values
Commands used on ZSET values
Source download:
https://github.com/josiahcarlson/redis-in-action
References
<<Redis In Action>>