I don't buy this, having written and dealt with a lot of concurrent Django apps - I think people read something about the GIL often, and don't understand what the articles are really meaning.

Basically Django is usually fronted with mod_wsgi and you use celery for backend tasks. The multiple requests part are dealt with because the web server pre-forks, and it's just fine with it.

I think Django's problem is it moves very slowly, and mostly just that. The ORM isn't awesome, but it's workable. You can also choose to not use parts of it, like templates, and that's common in single-page apps.

It is not very difficult to plug in gevent/tornado/twisted with Django and deal with it in a pretty effective way. Also, most the resource memory intensive tasks are delegated to celery anyways.