Scheduler component, or cron as messages

Wed, 31 May 2023 20:20:00 +0300

crontab -l under a login nobody remembers creating. That is where the real business logic of one server lived: a nightly cleanup, an export, a retry script.

Symfony 6.3 came out yesterday with a Scheduler component. Periodic tasks defined in PHP, executed as Messenger messages. Experimental, but the idea deserves a note.

#[AsSchedule('default')]
final class MainSchedule implements ScheduleProviderInterface
{
    public function getSchedule(): Schedule
    {
        return (new Schedule())->add(
            RecurringMessage::every('10 minutes', new CleanupExpiredCarts()),
        );
    }
}

Then messenger:consume scheduler_default, and a worker fires the messages.

Cron on Murat Useinov

Scheduler component, or cron as messages