How to use laravel queue

With the continuous development of the Internet industry, our websites are becoming more and more complex, and the number of visits is also increasing. In the case of high concurrency, processing a large number of time-consuming tasks is a very difficult task, which will cause our business to become stuck and blocked. In order to solve this problem, Laravel provides a queue function that can be used to handle some asynchronous and deferrable tasks so that users will not feel stuck. Next, let's learn how to use laravel queue.

1. Install the queue

1. Install the queue package

In Laravel, the queue is placed in the Laravel queue work package. We can use Composer to install the package:

composer require illuminate/queue

2. Add queue provider

Laravel supports multiple queue backends, including database, Redis, Beanstalkd, etc. We need to configure the queue provider in config/queue.php. For example, we can use the Redis queue provider:

'connections' => [

'redis' => [
    'driver' => 'redis',
    'connection' => 'default',
    'queue' => 'default',
    'retry_after' => 90,
    'block_for' => null,
],

],

2. Create a task

The queue is Designed to handle long running tasks, this can be any task or command. We can use the command line to generate a new queue task:

php artisan make:job SendEmail

The generated queue task class is placed in the app/Jobs directory, and the manually generated SendEmail task The class is a base class that looks like this:

namespace AppJobs;

use IlluminateBusQueueable;
use IlluminateContractsQueueShouldQueue;
use IlluminateFoundationBusDispatchable ;
use IlluminateQueueInteractsWithQueue;
use IlluminateQueueSerializesModels;

class SendEmail implements ShouldQueue
{

use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

/**
 * Create a new job instance.
 *
 * @return void
 */
public function __construct()
{
    //
}

/**
 * Execute the job.
 *
 * @return void
 */
public function handle()
{
    //
}

}

We can write in the handle() method The specific implementation logic of the task.

3. Push tasks to the queue

In Laravel, we can use the $dispatch() static method to add tasks to the queue. We can use this method in a controller, route or anywhere else like this:

use AppJobsSendEmail;

SendEmail::dispatch();

We can also Specify the delay and queue name using the queue's delay() and onQueue() methods.

For example, push the task to the queue named "emails" and process it after 10 seconds:

SendEmail::dispatch()->onQueue('emails')-> ;delay(now()->addSeconds(10));

4. Run Queue

We have pushed the task to the queue, now we need to run the queue and process the task. In Laravel, we can use the Artisan command to start the queue processor:

php artisan queue:work

By default, the queue processor will use the queue provider named "default" . We can set the queue for processor processing by using the "--queue" option. For example, to work with the mail queue:

php artisan queue:work --queue=emails

If you want to use all available processors to process the queue in turn, you can use the "--daemon" option . This ensures that even if one processor dies, it does not stop the processor from running.

php artisan queue:work --daemon

There are many other options for queue handlers. You can use the php artisan queue:work --help command to view all options and related information.

5. Summary

The above are the steps for using laravel queue. Using laravel queue, we can easily handle a large number of time-consuming tasks, thereby improving the efficiency and response speed of the application. If you'd like to dive into more details and options about queues, check out the official Laravel documentation.

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