mod_wsgi: Reload Code via Inotify - not every N seconds

Up to now I followed this advice to reload the code:

https://code.google.com/archive/p/modwsgi/wikis/ReloadingSourceCode.wiki

This has the drawback, that the code changes get detected only every N second. I could use N=0.1, but this results in useless disk IO.

AFAIK the inotify callback of the linux kernel is available via python.

Is there a faster way to detect code changes and restart the wsgi handler?

We use daemon mode on linux.

Why code reload for mod_wsgi at all

There is interest in why I want this at all. Here is my setup:

Most people use "manage.py runserver" for development and some other wsgi deployment for for production.

In my context we have automated the creation of new systems and prod and development systems are mostly identical.

One operating system (linux) can host N systems (virtual environments).

Developers can use runserver or mod_wsgi. Using runserver has the benefit that it's easy for debugging, mod_wsgi has the benefit that you don't need to start the server first.

mod_wsgi has the benefit, that you know the URL: https://dev-server/system-name/myurl/

With runserver you don't know the port. Use case: You want to link from an internal wiki to a dev-system ....

A dirty hack to get code reload for mod_wsgi, which we used in the past: maximum-requests=1 but this is slow.