Let's talk about how to consume queue tasks in Laravel

In Laravel, queues are an important tool for asynchronous processing. When processing asynchronous tasks, queues allow us to more flexibly utilize server resources and improve the scalability and performance of applications. When we push a time-consuming task into the queue, the application will continue to execute asynchronously, and the background work will be processed by the queue. When there are tasks in the queue that need to be processed, we need to consume the tasks from the queue. This article will introduce you to how to consume the Laravel queue.

1. Queue configuration

Before using Laravel’s queue function, we need to configure the queue and configure the following parameters in the .env configuration file:

QUEUE_CONNECTION=redis
REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

We can configure it according to our own needs. If a password is not required, we can set REDIS_PASSWORD to null. In this article, we use Redis as the driver for Laravel queues.

2. Create a queue task

In Laravel, we can use the following command to create a queue task:

php artisan make:job MyJob

After creation, in app/Jobs# A PHP file named MyJob will be generated in the ## directory. We only need to add the task code we want to complete.

3. Pushing the queue task

After we finish writing the queue task, we need to push it into the queue. Laravel provides multiple methods to push tasks into the queue. The following are two common methods:

Use
1. queue()method

$this->dispatch(new MyJob($data));

Use
2. dispatch()method

MyJob::dispatch($data);

The parameters of the above two methods are instances of the

MyJob class, $data Is the data passed into the task, which can be an array or object.

4. Consumption Queue Tasks

After we push the task, we need to consume the tasks in the queue. Laravel provides a variety of ways for us to consume queue tasks, such as:

Use
1. php artisan queue:workcommand

This command can be used in Start the queue work process in the terminal window to monitor whether there are tasks in the queue that need to be processed.

php artisan queue:work --queue=queue-name --tries=3

Among them,

queue-name is the queue name, tries is the number of error attempts, that is, when a task fails, the process that processes the task will be processed multiple times. Retry. At the same time, in the process of starting queue work, we can also specify the execution method of tasks in the queue.

Use
2. php artisan queue:listencommand

This command is also used to monitor queue tasks, and is the same as

php artisan queue:work The difference between the command is that it can monitor multiple queue names at the same time and group queue tasks.

Use
3. supervisorDaemon process

Using

supervisor allows us to continuously monitor queue tasks in the background and prevent queue worker processes Unexpected termination.

[program:laravel-worker]
process_name=%(program_name)s_%(process_num)02d
command=php /path/to/artisan queue:work redis --sleep=3 --tries=3
autostart=true
autorestart=true
user=root
numprocs=8
redirect_stderr=true
stdout_logfile=/path/to/worker.log

The above is a sample code using

supervisor, where numprocs=8 specifies the number of queue worker processes to open.

5. Summary

The above is how to consume the Laravel queue. According to your own needs and actual situation, you can choose to use the above mentioned methods to consume and process queue tasks. , if you don’t know much about Laravel queues, you can refer to the official documentation to learn.

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