[mperham]

Maybe you don't understand persistent background jobs or maybe I don't understand Erlang.

What happens if you have a bug in a task and it takes a week for your development team to develop a fix? Does that Erlang task live in memory all that time? That's the point of Sidekiq's retry subsystem and persistence in Redis.

Ruby is multi-threaded. My customers buy my commercial versions because they want the more complex features and support.