Not sure where you draw the line between a server and a platform, but Go and Elixir are async by default. (Not in the async await sense, but in the sense that t

Not sure where you draw the line between a server and a platform, but Go and Elixir are async by default. (Not in the async await sense, but in the sense that they handle requests using lightweight userspace threads). Besides that, Python, Java and PHP have had mature async web stacks available for years as well. Is there any commonly used language that doesn’t?