Redis

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker.

Supports...

data structures such as strings, hashes, lists, sets, sorted sets with range queries
bitmaps
hyperloglogs
geospatial indexes with radius queries
streams

$ brew install redis

Ensure that it will start upon system boot...

brew services start redis

Up and running?

redis-cli ping

redis-server

set name kevin
get name