[th0br0]

Other than the worker/concurrency mechanism being part of the language, what's the difference to a RabbitMQ-Worker architecture? You might even argue that the lack of persistence (in the given example) is a potential source for data loss.

[fixxer]

I'm guessing persistence is not a priority.

The difference is management of a simple process (behind elastic load balancer, of course) vs a more complicated architecture with three distinct, load balanced process types (webserver -> queue -> worker).