Drupal Event Dispatcher redirect programmatically

drupalbook_examples.services.yml

services:
  drupalbook_examples.event_subscriber:
    class: Drupal\drupalbook_examples\EventSubscriber\DrupalbookExamplesSubscriber
    tags:
    - {name: event_subscriber}

DrupalbookExamplesSubscriber.php

<?php
// modules/custom/drupalbook_examples/src/EventSubscriber/DrupalbookExamplesSubscriber.php
namespace Drupal\drupalbook_examples\EventSubscriber;
 
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
class DrupalbookExamplesSubscriber implements EventSubscriberInterface {
 
  public function checkForRedirection(GetResponseEvent $event) {
    if ($event->getRequest()->query->get('redirect-me')) {
      $event->setResponse(new RedirectResponse(\Drupal::url('<front>', [], ['absolute' => TRUE])));
    }
  }
 
  public function redirectBeforeWithoutCache(GetResponseEvent $event) {
    if ($event->getRequest()->query->get('redirect-me')) {
      $event->setResponse(new RedirectResponse(\Drupal::url('<front>', [], ['absolute' => TRUE])));
    }
  }
 
  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[KernelEvents::REQUEST][] = array('checkForRedirection');
    $events[KernelEvents::REQUEST][] = array('redirectBeforeWithoutCache', 300);
    return $events;
  }
 
}