Rust's async just doesn't worth the hassle. At the moment when you have enough requests to get the benefits from async over thread::spawn, you'll HAVE TO run mu

Rust's async just doesn't worth the hassle. At the moment when you have enough requests to get the benefits from async over thread::spawn, you'll HAVE TO run multiple instances/servers, at least for fail-safety reasons. And when the load is balanced, all the async benefits are not enough to be noticed, so there are no reasons to step into this mess.