redis

http://code.google.com/p/redis/wiki/CommandReference

require password

#/etc/redis.conf
requirepass password

redis纯ruby接口速度慢，unix上用hiredis

if RUBY_PLATFORM =~ /mingw/
  gem 'redis'
else
  gem 'hiredis', '~> 0.4.0'
  gem "redis", '>= 2.2.0', require: %w[ redis redis/connection/hiredis ]
end