Are there any known issues with django and multithreading?
Generally, your Django app already is multi-threaded.  That's the way most of the standard Django servers operate -- they can tolerate multiple WSGI threads sending requests to them.
Further, you'll almost always have Django running under Apache, which is also multi-threaded.
If you use mod_wsgi, then Django may be part of the Apache process or a separate process.
Anything that is running "side-by-side" (Whatever that means) will be outside Apache, outside Django, and in a separate process.
So any multi-threading considerations don't apply between your Apache process (which contains Django) and your other process.
I need to develop an app that runs side by side with a django-app.
This will be the first time i develop a multithreaded app that runs next to a django-app so are there any 'gotchas' and 'traps' i should be aware of?