How a request is processed in Django?

In Django whenever a request is made by a user, it goes through the following steps:

• Django determines the root URLconf module to use. Ordinarily, this is the value of the ROOT_URLCONF setting, but if the incoming HttpRequest object has a urlconf attribute (set by middleware), its value will be used in place of the ROOT_URLCONF setting.
• Django loads that Python module and looks for the variable urlpatterns. This should be a Python list of django.urls.path() and/or django.urls.re_path() instances.
• Django runs through each URL pattern, in order, and stops at the first one that matches the requested URL.
• Once one of the URL patterns matches, Django imports and calls the given view, which is a simple Python function (or a class-based view). The view gets passed the following arguments:
  • An instance of HttpRequest.
  • If the matched URL pattern returned no named groups, then the matches from the regular expression are provided as positional arguments.
  • The keyword arguments are made up of any named parts matched by the path expression, overridden by any arguments specified in the optional kwargs argument to django.urls.path() or django.urls.re_path().
  • If no URL pattern matches, or if an exception is raised during any point in this process, Django invokes an appropriate error-handling view.