Incorrect shared mutable state example at website ntex.rs

[justforcomment]

Page contains the next code fragment:
https://ntex.rs/code#shared-mutable-state

`use ntex::web;
use std::sync::Mutex;

struct AppStateWithCounter {
counter: Mutex, // <- Mutex is necessary to mutate safely across threads
}

async fn index(data: web::types::State) -> String {
let mut counter = data.counter.lock().unwrap(); // <- get counter's MutexGuard
*counter += 1; // <- access counter inside MutexGuard

format!("Request number: {counter}") // <- response with count

}

#[ntex::main]
async fn main() -> std::io::Result<()> {
// Note: app state created outside HttpServer::new closure
let counter = AppStateWithCounter {
counter: Mutex::new(0),
};

web::HttpServer::new(move || {
    // move counter into the closure
    web::App::new()
        // **!! Incorrect usage is here !!**
        .state(counter.clone()) // <- register the created data
        .route("/", web::get().to(index))
})
.bind(("127.0.0.1", 8080))?
.run()
.await

}
`

1. Of course we can't clone an owned type containing a mutex (that not implements Clone)..
   Is mistake? Is this website run by someone else? Moreover, it is not always available (ERR_TIMED_OUT);

2. The site also recommends not wrapping a shared mutable state in Arc, since this is done internally by the framework. When many examples still wrap the state explicitly in Arc, which seems to lead to duplication -- right?

[fafhrd91]

@leon3s could you update example in doc. I reviewed example. and yes, we do not support multi threading state, Arc must be used explicitly. also regarding docs hosting, should we push docs to github instead?

[leon3s]

I can unlock time this weekend to update the doc, if the op can make a PR for the doc it will be deployed automatically once merged. As for the (ERR_TIMED_OUT) it can come from the client aswell uptime kuma show 100% uptime for me.. but we can see to migrate if you want but i rather not and try to find the issue if there is really one

[leon3s]

If you give me a discord url for webhook i can add it to uptime kuma, it will send a message if the service go down, i have it but in my own discord

[fafhrd91]

@leon3s I gave you admin role on discord server

[leon3s]

Alright i'll setup this asap

[leon3s]

I have setup the webhook and also added the website on this page: https://status.next-hat.com/