Working with asynchronous errors in PHP

asynchronous-errors-in-php-05.php

# config/packages/messenger.yaml
framework:
    messenger:
        transports:
            failed: 'doctrine://default?queue_name=failed'
            async:
                retry_strategy:
                    max_retries: 3
                    # milliseconds delay
                    delay: 1000
                    # causes the delay to be higher before each retry
                    # e.g. 1 second delay, 2 seconds, 4 seconds
                    multiplier: 2
                    max_delay: 0
                    # override all of this with a service that
                    # implements Symfony\Component\Messenger\Retry\RetryStrategyInterface
                    # service: null