[hardwaresofton]

Like others posted, I definitely meant rust, if we're talking compiled, compile time checked systems languages -- there are only so many recent entries with something new to say in the space.

If we're talking just pure abstraction I think there are a lot of other choice that could have delivered similar improvements in performance for an IO-dependent workload, with better methods of abstraction, ecosystem, and safety -- that choice for me would be Typescript.

[EDIT] Also to note, even as a Haskell zealot I'm not crazy enough to suggest someone choose Haskell as an alternative where Go would have been good enough. I have enough experience with business needs to know that the purity/safety/whatever other benefits of haskell just aren't worth the lack of ecosystem, difficulty in finding developers, and hit to developer speed. Haskell is too far on the spectrum (on various axes) to be the right choice most of the time, and not enough companies have shared how they've outperformed with it to even start the conversation. Haskell is like the mercedes of programming languages -- airbags show up there first, but regular cars get them eventually.