Comment by skrtskrt

For me the hangup is that async is Still Hard. Just a ridiculous amount of internal implementation details exposed in order to just write, like, an http middleware.

We looked at proposing Rust as the second blessed language in addition to Go where I work, and the conclusion was basically... why?

We have skilled Go engineers that can drop down to manual memory management and squeeze lots of extra performance out of it. And it's still dead simple when you don't need to do that or the task is suitable for a junior engineer. And channels are simply one of the best concurrency primitives out there, and baked into the language unlike Rust where everything is library making independent decisions. (to be fair I haven't tried Elixir/Erlang message passing, I understand people like that too).