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For every $500 you spend, we will provide you with a $500 credit on your account*

BLACK FRIDAY SPECIAL EXTENSION

*The maximum is $4000 in credits, Offer valid till December 6th, 2024, New Customers Only, Credit will be applied after purchase and expires after six (6) months

Drupal 9 HOOK_CRON | All About

by | Dec 5, 2023

Read the article to learn more about hook_cron() on Drupal 9. Bobcares, as a part of our Drupal Software Development offers solutions to every query that comes our way.

The hook_cron() on Drupal 9

Programs that utilise hook_cron() can run instructions regularly. After that, the engine will call the hook—as specified by the admin—every time a cron run occurs. Database maintenance, backups, recalculating settings or parameters, automatic mailing, as well as remote data retrieval are typical duties handled by hook_cron().

Tasks that are short-lived or need few resources can be carried out directly in the hook_cron() implementation. So, sending emails, accessing distant data, and heavy file operations are examples of long-running and potentially time-consuming tasks that should be used with the queue API rather than being executed directly. We can use hook_queue_info() to define one or more queues before proceeding. Next, add to the designated queues the things that require processing.

The hook_cron() method is used in order to provide a cron job. The scheduled actions, including content updates, cache clearing, as well as other recurring processes, are carried out using the cron system.

We must build a custom module and declare hook_cron() in the module’s .module file in order to use it.

An Example

drupal 9 hook_cron

We built a custom module named “module1” in the example above. The code for the particular cron task may be written inside the module1_cron() function. In this instance, a backup is made upon the execution of the cron job.

After hook_cron() has been carried out, we must enable the module in the Drupal admin panel. The module1_cron() function will be invoked each time the cron system executes.

It’s crucial to remember that the cron jobs are started by either manually running the Drupal cron or by receiving external requests. The Drupal setup determines how often cron runs.

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Conclusion

When it comes to integrating recurring activities and background operations into the content management system, Drupal 9’s hook_cron function is essential. Using hook_cron, developers may set up actions that execute on certain time intervals, making it easier to carry out repeating procedures like data updates, cleanups, or any other recurring chores required to keep a Drupal site operating smoothly.

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