cached? (Merb::Cache::FileStore)

    # File lib/merb-cache/cache-store/file.rb, line 34
      def cached?(key)
        cache_file = @config[:cache_directory] / "#{key}.cache"
        _data = _expire = nil
        if File.file?(cache_file)
          _data, _expire = Marshal.load(cache_read(cache_file))
          return true if _expire.nil? || Time.now < _expire
          FileUtils.rm_f(cache_file)
        end
        false
      end