Redis driver for Ruby using Hiredis

 ruby-hiredis provides a Ruby extension that wraps Hiredis. Both the synchronous
 connection API and a separate protocol reader are supported. It is primarily
 intended to speed up parsing multi bulk replies.
 .
 Hiredis is a minimalistic C client library for the Redis database, a
 persistent key-value database with support for atomically manipulating and
 querying data structures such as lists and sets.