Redis is commonly used as a cache to store frequently accessed data in memory so that applications can be responsive to users. With the capacity to designate how long you want to keep data, and which data to evict first, Redis enables a series of intelligent caching patterns.install redis
$ wget http://download.redis.io/releases/redis-5.0.8.tar.gz
$ tar xzf redis-5.0.8.tar.gz
$ cd redis-5.0.8
$ makeLaunch redis
$ src/redis-serverRedis launch from any dir
$ sudo make test install
$ redis-serverRedis built in client
$ src/redis-cli
redis> set foo bar
OK
redis> get foo
"bar"