[cammil]

Its not clear to me why youd need a tool to do this. Arent transactions and queue (say with celery) easy to write?

[lawik]

Not necessarily easy to do performantly, scalably and well. Oban has been doing this in Elixir at real scale for a decent while now.

Why do you need a tool? Well. You say celery. I am inclined to say Oban. And I'd say both are tools.