BusyBee is a high-performance .NET background processing library built on native channels. It provides a simple, configurable, and observable solution for handling background tasks with built-in OpenTelemetry support and flexible queue management.

How is it different from hangfire?

I'm trying to find the actual value-add here. This feels like TPL but with more steps.

Why do we need to serialize the jobs through a Channel<T>? Couldn't we just do Task.Run and let the runtime take care of scheduling our work?

This seems to be a thin abstraction over Channels, I'd probably prefer to use Channels directly in almost all cases.

I really like Channels for in-memory queues like this, they're very nice and it's easy to make everything parallel. But if you need more than this you usually need persistence, and then you need something else entirely.