Sorry, so you can use synchronous functions for writing middleware and routes, but the rocket core does use tokio.

Not all async Rust webframeworks let you do away with async and futures entirely in your business logic.

So the caveat is you need to call `spawn_blocking` with synchronous functions. I see.

With a framework like Axum, yes, but with Rocket, no - you can just declare synchronous functions and pass them as a route handler, e.g.: https://github.com/Qwuke/recurse-ring/blob/main/src/main.rs#...

If you're averse to touching async fn's or tokio APIs _at all_, it's nice devex.