Using Defer helper in laravel 11

[MohamedAbdel-wahed]

Route::get('/', function () {
    defer(function () {
        sleep(5);
        dump("Running defered code");
    });

    return response('success', 200);
});

This code runs perfectly as expected on a production server. I get the response immediately while defered code runs on the background.
On my local machine, it returns the response immediately as well
BUT the browser keeps loading until the defered code finishes executing after 5 seconds that had been set by sleep(5)

My local OS is linux debian 12

What could be causing this problem?

[ghost]

Isn't this the same as \app()->terminating(fn() => ... ?
see https://dev.to/webong/execute-an-action-after-laravel-returns-response-4pjc

Edit I can't find the function definition in L11.

[henzeb]

It runs via a Terminable Middleware. Not sure if app->terminate also works that way or the Terminable Middleware gets executed in app->terminate

[ghost]

app terminate is terminable callback @henzeb but basically should do the same.

[inmanturbo]

Are you using php artisan serve or some equivalent to serve your project locally? To use defer locally you should use Valet (there is a valet linux package) or some other fastcgi, fpm implementation. Defer requires fastcgi. Basically it uses fastcgi to execute on a forked process. Using dev server it would just block until the request is terminated.

[inmanturbo]

https://github.com/cpriego/valet-linux

[inmanturbo]

Also see cpriego/valet-linux#381