The answer is to write your server in portable C++, and just rebuild it for whatever new OS you're dealing with. The speed. Imagine the performance. There are

The answer is to write your server in portable C++, and just rebuild it for whatever new OS you're dealing with. The speed. Imagine the performance. There are plenty of mature C++ web server frameworks, it's really not difficult. If you're afraid of C++, you could choose something else. Rust if you're insane, or golang if you're insane but in a different way. Anyway. Nginx is not going away, so the argument is a bit silly. "What if js went away". Same thing.