1. The template tag is run only once when Django loads the template.

I added a `print` at line 63 and checked the terminal and can only see the printed message once, when Django is started and it loads the static files on memory.  I was running `python manage.py kaserve` by the way.

2. Good idea re "limit the number of bytes read at a time". I have tried to limit the number of bytes read based on the SO reference I used above but it wasn't working yesterday. Will try again today.

Thanks for the SO link. :)