That's fair, the idea itself isn't new. Workflows/durable execution have been around forever (same story in Elixir).

The differences are in the implementation and DX: the programming abstraction, how easy recovery/debugging is, and how it behaves once you're running a production cluster.

One thing that bit us early was versioning. In practice, you always end up with different workers running different code versions (rolling deploys, hotfixes, etc.). We spent a lot of time there and now support both workflow versioning and patching, so old executions can replay deterministically while still letting you evolve the code.

Curious how Oban handles versioning today?