I can hate Rayon and Tokio as much as the next guy generally I can empathize with problems they cause. But largely either it's a skill issue.

Or you are just trying to squeeze lemonade from stones, ala, they aren't meant to do what you are doing.

Tokio especially is extremely widely used for all kinds of things it doesn't work well for.

Sure I could improve it add or tune some primitives but I am honestly considering writing my own. And so should others.

I feel like we are all too bound in Rust ecosystem suddenly to Tokio and Rayon because we don't want to blame and acknowledge the libraries just don't work for what we want to use it for.

And library authors don't consider these usecases and bug important enough to actually fix it in a ergonomic way.