What is Redis

It’s a “NoSQL” key-value data store. More precisely, it is a data structure server. The closest analog is probably to think of Redis as Memcached, but with built-in persistence (snapshotting or journaling to disk) and more datatypes
Know more here :-
http://www.linuxtroubleshoot.com/index.php/2016/03/16/what-is-redis/

I must say, I’m a little baffled about the reason for this posting ?