Laravel 5.8 background job is not in the background - laravel

Question

I have a library, which imports lots of images and I am trying to use Laravel background jobs. For queued jobs, I am following Laravel documentation.
First (create table):
php artisan queue:table
php artisan migrate
Then configuration in .env file for Redis:
REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=43216
Create a job:
php artisan make:job CarsJob
CarsJob:
public function handle()
{
$cars = new CarsLibrary();
$CarsLibrary->importAll();
}
Dispatching a job in a some action in the controller:
First what I have tried:
$importCarsJob = (new ImportCarsJob())->onQueue('import_cars');
$this->dispatch($importCarsJob );
Second what I have tried:
$importCarsJob = new importCarsJob();
$this->dispatch($importCarsJob);
I have enabled Redis in my hosting. It is shared hosting.
If I access the URL, I see that this job is not in the background, because it needs more than a minute to finish the request.
EDIT:
The env file is above, this is config/queue.php:
'connections' => [
'sync' => [
'driver' => 'redis',
],
... other drivers like beanstalkd
'database' => [
'driver' => 'database',
'table' => 'jobs',
'queue' => 'default',
'retry_after' => 90,
],
'redis' => [
'driver' => 'redis',
'connection' => 'default',
'queue' => env('REDIS_QUEUE', 'default'),
'retry_after' => 90,
'block_for' => null,
],
],
I have no REDIS_QUEUE in env file.

Answer 1

It seems that you have not updated your queue connection in config/queue.php from sync to redis (or the environment variable QUEUE_CONNECTION). The sync driver will execute jobs immediately without pushing them on a queue.
By the way, you don't need the queue database table if you use the redis queue driver.