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cubicYYY avatar cubicYYY commented on August 26, 2024 1

The reason:
the worker threads will create a new state for each thread. So it must be done by ways like .clone()

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cubicYYY avatar cubicYYY commented on August 26, 2024

To be more specific:
I'm using it with actix-web.
At the beginning, it works fine:

let c = Cache::builder()
        .time_to_live(Duration::from_secs(60 * 60 * 24)) // live, 24h
        .build(),
let app = MyStruct{c};
HttpServer::new(move || {
        App::new()
            .app_data(web::Data::new(app.clone()))
//....

            }).bind(("0.0.0.0", 8888))?
    .run()
    .await;

But after I changed to:

let c = Cache::builder()
        .time_to_live(Duration::from_secs(60 * 60 * 24)) // live, 24h
        .build(),
HttpServer::new(move || {
        App::new()
            .app_data(web::Data::new(MyStruct{c})) // Now inside
//....

            }).bind(("0.0.0.0", 8888))?
    .run()
    .await;

And the problem occurs.

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cubicYYY avatar cubicYYY commented on August 26, 2024

Is this a problem with the smart pointers, and maybe the underlying issue is something inside the unsafe impl Send/Sync ?

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