Question

I would like to have django admin panel with tornado backends, which will process requests from online game. I dont know at the moment, is it a good idea to load django app in the next way:

wsgi_app = tornado.wsgi.WSGIContainer(
django.core.handlers.wsgi.WSGIHandler())
tornado_app = tornado.web.Application(
[
  ('/hello-tornado', HelloHandler),
  ('.*', tornado.web.FallbackHandler, dict(fallback=wsgi_app)),
])
server = tornado.httpserver.HTTPServer(tornado_app)
server.listen(options.port)
tornado.ioloop.IOLoop.instance().start()

HelloHandler is going to be a backend parser.

Will I loose some performance in combining wsgi + ioloop ?

If its a bad solution, its possible to run 2 apps: django admin and tornado web. Could you answer how can I use Django ORM with Tornado App?

Answer 1

Just take this equation and solve it.

• You want to have non-blocking IO – X.
• You want to have django ORM – Y.
• You want to have django admin – Z.

Now, move point by point:

• For X – tornado is enough itself.
• For Z – django is enough itself. I don’t think, you want to have
  thousands of administrators, that manage your site at one time.
• For Y it is harder. Django ORM is blocking itself.

Best way here – not to use Django ORM with tornado.

Second way – you can dive deeper and integrate it directly in tornado, if you are sure that it will not block whole application. Take solution from this answer.

Third way – you can convert your django application to service, that makes heavy work with ORM, and you can access this service with AsyncHTTPCLient from tornado.

Fourth way – integrate tornado web server into your django application. Actually, it will give you small performance boost.

Fifth way – use two tornado web servers. Sounds crazy, yes. Use one with Django ORM integrated, and second with AsyncHTTPClient.

I believe, that you can take best of 2 worlds.