>>krick+RD1
You can use celery with postgres without issues if you want the stuff you don't get with that, like tweakable retries, tweakable amounts of prefetch and other important-at-scale things. Plus out of the box working sdk with higher level patterns for you developers. Like what if devs want to track how long something waited in the queue or a metric about retries etc, things that you'd have to roll by hand.