gistfile1.rb

  def self.create_single_girlfriend_for_user(user_id, girlfriend_id, friend_hash)
    if friend_hash['gender'] == 'female'
      R.hset "user:#{user_id}:girlfriends", girlfriend_id, friend_hash['relationship_status']
      if friend_hash['relationship_status'] == "Single"
        return Friend.build_for_user_id(user_id, girlfriend_id, friend_hash)
      end
    end
  end


-----

      girlfriends.each do |gf_id, gf_hash|
         old_relationship_status = R.hget("user:#{user.id}:girlfriends", gf_id)
         if gf_hash['relationship_status'] == "Single" && old_relationship_status != "Single"
          single_girlfriends << Friend.build_for_user_id(user.id, gf_id, gf_hash)
        end
      end

------

  #Remove old cache and make a new one
      R.del("user:#{user.id}:girlfriends")
      R.mapped_hmset("user:#{user.id}:girlfriends", girlfriends_cache.to_a.flatten)
    end