Laravel multiple apps same server do queues conflict if same name? - php

Question

We're currently running two laravel applications on the same dedicated server. Each application utilizes laravel's queueing system for background jobs and notifications. Each uses redis for the driver. Neither define any specific queues, they are both using the default. Our supervisor .conf is as follows:
[program:site-one-worker]
process_name=%(program_name)s_%(process_num)02d
command=php /var/www/siteone.com/artisan queue:work --sleep=5 --tries=1
autostart=true
autorestart=true
user=www-data
numprocs=4
redirect_stderr=true
stdout_logfile=/var/www/siteone.com/storage/logs/worker.log
[program:site-two-worker]
process_name=%(program_name)s_%(process_num)02d
command=php /var/www/sitetwo.com/artisan queue:work --sleep=5 --tries=1
autostart=true
autorestart=true
user=www-data
numprocs=4
redirect_stderr=true
stdout_logfile=/var/www/sitetwo.com/storage/logs/worker.log
Everything worked as expected before adding the configuration for the second site. After adding it, we were testing and noticed that when invoking an event on sitetwo.com that triggered a notification to be sent to the queue, that the email addresses which should have received the notifications did not, and instead they were sent to two email addresses that only exist within the database for siteone.com!
Everything seems to function as expected as long as only one of the above supervisor jobs is running.
Is there somehow a conflict between the two different applications using the same queue name for processing? Did I botch the supervisor config? Is there something else that I'm missing here?

Answer 1

The name of the class is all Laravel cares about when reading the queue. So if you have 2 sites dispatching the job App\Jobs\CoolEmailSender, then whichever application picks it up first is going to process it, regardless of which invoked it.
I can think of 2 things here:
Multiple redis-instances
or
unique queue names passed to --queue

Answer 2

I just changed APP_ENV and APP_NAME into .env file and it worked for me.
For Example:
First .env: APP_ENV=local APP_NAME = localapp
Second .env: APP_ENV=staging APP_NAME=stagingapp

Answer 3

Maybe late but did you try to modify the queue config at config/queue.php
'redis' => [
'driver' => 'redis',
'connection' => 'default',
'queue' => 'project1', // 'project2'...
'retry_after' => 90,
'block_for' => null,
],
run queue with --queue=project1

Answer 4

Note: This answer is for those who are having multiple domains, multiple apps, and one database.
You can dispatch & listen to your job from multiple servers by specifying the queue name.
App 1
dispatch((new Job($payload))->onQueue('app1'));
php artisan queue:listen --queue=app1
App 2
dispatch((new Job($payload))->onQueue('app2'));
php artisan queue:listen --queue=app2