Deferred function helper execute the task before the HTTP response has been sent to the user

[saychool]

Laravel Version

11.26

PHP Version

8.3

Database Driver & Version

Postgresql 16 self hosted on ubuntu 24

Description

upgraded to laravel 11.x from 10.x and still has app/Http/Kernel.php file, adding InvokeDeferredCallbacks to my Kernel.php already like the documentation told (here), but i think the helper didn't work correctly

Steps To Reproduce

Route::get('/testingDefer', function () {
    defer(function () {
        sleep(10);
    });

    return true;
});

just a simple test, i did some complex code before but simple test are enough to reproduce

[crynobone]

Can you provide the web server information?

[saychool]

Can you provide the web server information?

NGINX using Laravel Herd on my local development, NGINX with Ubuntu 24 on production / staging environment

[timacdonald]

The web server will need to be using PHP-FPM or Lightspeed for the defer function to run after the HTTP connection has disconnected.

If the required web server functions are not available the deferred functions will simply run after the response is sent to the client but before they are disconnected.