Maintenance: Use the 'hiredis' gem for increased performance.

Gemfile

@@ -29,6 +29,7 @@ gem 'delayed_job_active_record'
 # core - websocket
 gem 'em-websocket'
 gem 'eventmachine'
+gem 'hiredis', require: false
 gem 'redis', require: false
 
 # core - password security

Gemfile.lock

@@ -251,6 +251,7 @@ GEM
       guard-compat (~> 1.1)
     hashdiff (0.3.8)
     hashie (3.6.0)
+    hiredis (0.6.3)
     htmlentities (4.3.4)
     http (3.3.0)
       addressable (~> 2.3)
@@ -272,6 +273,7 @@ GEM
     ice_cube (0.16.3)
     inflection (1.0.0)
     interception (0.5)
+    ipaddr (1.2.2)
     json (2.3.0)
     jwt (2.2.2)
     kgio (2.11.2)
@@ -370,6 +372,7 @@ GEM
       omniauth (~> 1.5)
       omniauth-oauth2 (>= 1.4.0)
     openssl (2.1.2)
+      ipaddr
     parallel (1.20.1)
     parser (3.0.1.1)
       ast (~> 2.4.1)
@@ -630,6 +633,7 @@ DEPENDENCIES
   guard
   guard-livereload
   guard-symlink
+  hiredis
   htmlentities
   icalendar
   icalendar-recurrence

lib/sessions/store/redis.rb

@@ -9,7 +9,8 @@ class Sessions::Store::Redis
   def initialize
     # Only load redis if it is really used.
     require 'redis'
-    @redis = Redis.new
+    require 'hiredis'
+    @redis = Redis.new( driver: :hiredis )
   end
 
   def create(client_id, data)