Linux is somewhat unique because they tried many times, and it never worked quite well, "epoll" is the penultimate attempt as of today, "io_uring" is the last o

Linux is somewhat unique because they tried many times, and it never worked quite well, "epoll" is the penultimate attempt as of today, "io_uring" is the last one. Linux is also somewhat unique, because most of the Internet, basically, you could say all of the Internet with a bit of hand-waving runs on Linux. So, even if other OSes have asynchronous I/O it doesn't affect the Internet.