std::sync::Mutex blocks the thread about actix-website HOT 3 CLOSED

The std mutex is fine to use in async code as long as locks aren't held across await points; that's where you run into risk of deadlocks. I'd consider improving the comments/docs around this example but wouldn't want to needlessly turn devs away from the simplest solution.

from actix-website.

Like robjtede pointed out. async mutex is more expensive and potential slower when having a short critical session.
Tokio has pointed out this clearly in it's tutorial: https://tokio.rs/tokio/tutorial/shared-state (Use Tokio's asynchronous mutex)

from actix-website.

Closing this for now.
My conclusion is always uses sync mutex when you can. This issue is welcomed to re open or followed discussion if there are reliable soruce pointing otherwise.

from actix-website.