docs: def format_request(self):
          """Override for better log format
  
          Tornado format:
          [INFO 2015-03-24 11:29:57 app:521] 200 GET /static/css/lib/pure-min.css (127.0.0.1) 6.76ms
          Current format:
          [gevent.wsgi] INFO 127.0.0.1 - - [2015-03-24 11:18:45] "GET /test HTTP/1.1" 200 304 0.000793
          """
          fmt = '{now} {status} {requestline} ({client_address}) {response_length} {delta}ms'
  
          requestline = getattr(self, 'requestline')
          if requestline:
              # Original "GET / HTTP/1.1", remove the "HTTP/1.1"
              requestline = ' '.join(requestline.split(' ')[:-1])
          else:
              requestline = '???'
  
          if self.time_finish:
              delta = '%.2f' % ((self.time_finish - self.time_start) * 1000)
          else:
              delta = '-'
  
          data = dict(
              now=datetime.datetime.now().replace(microsecond=0),
              response_length=self.response_length or '-',
              client_address=self.client_address[0] if isinstance(self.client_address, tuple) else self.client_address,
              status=str(self._get_status_int()),
              requestline=requestline,
              delta=delta,
          )
  
          return fmt.format(**data)