I’m very much an Odoo guy who has dabbled with Django (and notably, celery in the past) but as someone who makes huge use of the Odoo OCA queue module[0], I never understood why Django never made use of the Postgres LISTEN/NOTIFY to offload tasks. Maybe this is my misunderstanding as I’m pretty green with the Django ecosystem as a whole.

[0] https://github.com/oca/queue