Comment by thomashabets2

I'm trying to understand the context in which the parent commenter uses the term, since it can mean multiple things. They said "async" and then enumerated some wildly different things.

Like, do you need async runtimes to do epoll async in Rust? No. Ok, so that excludes many definitions. Do you need coroutines in C++ to do aio for reading and writing? No.

So like I said, what do they mean by "async"? The blog post refers to a web server that does "async" in Rust without any async runtime, and without the `async` keyword.

In other words, that parent commenter is what's called "not even wrong".