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Overview

Cachet uses a queue to send Configuring Mail and Beacons without slowing down the rest of the application. This can be setup in a variety of ways.

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Supervisor

The recommended setup for the queue is to use Supervisor.
Supervisor is a process manager which makes managing a number of long-running programs a trivial task by providing a consistent interface through which they can be monitored and controlled.

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Cachet v2.4

/etc/supervisor.d/conf/cachet.conf
[program:cachet-queue]
command=php artisan queue:work --delay=1 --sleep=1 --timeout=1800 --tries=3
directory=/var/www/cachet/
redirect_stderr=true
autostart=true
autorestart=true
user=cachet

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Cachet v2.3

You should create a Supervisor configuration file named /etc/supervisor.d/conf/cachet.conf
/etc/supervisor.d/conf/cachet.conf
[program:cachet-queue]
command=php artisan queue:work --daemon --delay=2 --sleep=1 --tries=3
directory=/var/www/cachet/
redirect_stderr=true
autostart=true
autorestart=true
user=cachet

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Queues Using The Scheduler

The default installation of Cachet sets the queue type to database which means that all jobs are stored within your database and is then processed by a cron job which calls an artisan command from within the project directory. You’ll need to create a new cron job, in Ubuntu it’s a case of running crontab -e and adding this line:
/etc/crontab
* * * * * php /path/to/artisan schedule:run >> /dev/null 2>&1
Close the file and the cron job will now begin running, processing any confirmation and incident emails.

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Synchronous Queue

If you cannot add a queue job, another alternative is to process all of the jobs immediately after they are created.
This setup is not ideal for larger installs with hundreds of subscribers as each email can take a few seconds to send and would slow down your interaction with the system.
To set this up change the .env file with the following setting:
.env
QUEUE_DRIVER=sync