I am not really sure how much yet another post complaining about async/await that ends with “thread-per-core is the way to go” adds to this discussion. Granted I’m both an Erlang programmer and a big fan of Tokio and Rust’s async/await implementation in general and I think this post and many others like it betray a fundamental misunderstanding of these technologies so I am probably biased.

When I learned about async/await when it came out with .NET, they put tremendous amount into explaining that async/await is not concurrency. But that was in time when you did a training when a new version of your programming stack came out and you did not consume knowledge in 30s snippets.