begin
  memcached_config_path = File.join(Rails.root, 'config', 'memcached.yml')
  if File.exists?(memcached_config_path)

    # create a memcache instance with multiple servers
    memcached_config = YAML::load(File::read(memcached_config_path))
    args = [:mem_cache_store]
    args << memcached_config[:defaults][:servers]
    args << { :namespace => memcached_config[:defaults][:namespace] }
    args.flatten!
    ActionController::Base.cache_store = *args
    ActionController::Base.perform_caching = true
  end
rescue Exception => e
  Rails.logger.error("failed to initialize memcache store: #{e}")
end