gistfile1.txt

  try_files
    @cache
    /maintenance.html
    @passenger;

  location @cache {
    # Make sure we don't try to hit the cache files on POST or nginx
    # will explode with a 405 Method Not Allowed
    if ($request_method != GET) {
      return 404;
    }

    try_files /cache/$uri /cache/$uri.html =404;
  }

  location @passenger {
    passenger_enabled on;
  }