How does cron group work in Magento 2?

How does cron group work in Magento 2?

How does cron group works in Magento 2?

This article will help you to understand how the cron group works in Magento 2.

A cron group is a logical group that allows you to easily run a cron for more than one process at a time. Most Magento modules use the default cron group; some modules use the index group.

Example : <your component base dir>/<vendorname>/module-<name>/etc/crontab.xml

Here when defining the crontab for the module we need to define the group name too. Here group_name is the name of the cron group. The group name doesn’t have to be unique. We can run the cron for one group at a time.

Create custom cron group

Declare a new group and specify its configuration options (all of which run in the store’s view scope) through the cron_groups.xml file, located at:
<your component base dir>/<vendorname>/module-<name>/etc/cron_groups.xml

Example:

Where:

  • group_name – Name of the custom group.
  • schedule_generate_every – Frequency (in minutes) that schedules are written to the cron_schedule table.
  • schedule_ahead_for – Time (in minutes) in advance that schedules are written to the cron_schedule table.
  • schedule_lifetime – Window of time (in minutes) that cron job must start or will be considered missed (“too late” to run).
  • history_cleanup_every – Time (in minutes) that cron history is kept in the database.
  • history_success_lifetime – Time (in minutes) that the record of successfully completed cron jobs is kept in the database.
  • history_failure_lifetime – Time (in minutes) that the record of failed cron jobs is kept in the database.
  • use_separate_process – This feature is available only for Magento 2.1 and later.

 

Verify your custom cron group

Step 1
Run Magento cron jobs for your custom group:
php bin/magento cron:run --group="group_name"

Execute this multiple times to check and confirm.

Step 2
Clean the Magento cache:
php bin/magento cache:clean

Step 3
Log in to the Magento Admin as an administrator.

Step 4
Click Stores > Configuration > Advanced > System.

Step 5
In the right pane, expand Cron. Your group of crons are displayed as follows:

Cron Groups

Thanks for reading! 🙂

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