application_controller.rb cache_fetch wrapper

# application_controller.rb
  def cache_fetch(key, time_expire = 0)
    if ENV["RAILS_ENV"] == 'development' && !CACHE_DEVELOPMENT
      yield
    else
      # CACHE.fetch(key, time_expire){yield} #this is the old way
      unless output = CACHE.get(key)
        output = yield
        CACHE.set(key, output, time_expire)
      end
      return output
    end
  end