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Drupal 10 Module Development

You're reading from   Drupal 10 Module Development Develop and deliver engaging and intuitive enterprise-level apps

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Product type Paperback
Published in Apr 2023
Publisher Packt
ISBN-13 9781837631803
Length 580 pages
Edition 4th Edition
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Author (1):
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Daniel Sipos Daniel Sipos
Author Profile Icon Daniel Sipos
Daniel Sipos
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Toc

Table of Contents (21) Chapters Close

Preface 1. Chapter 1: Developing for Drupal 2. Chapter 2: Creating Your First Module FREE CHAPTER 3. Chapter 3: Logging and Mailing 4. Chapter 4: Theming 5. Chapter 5: Menus and Menu Links 6. Chapter 6: Data Modeling and Storage 7. Chapter 7: Your Own Custom Entity and Plugin Types 8. Chapter 8: The Database API 9. Chapter 9: Custom Fields 10. Chapter 10: Access Control 11. Chapter 11: Caching 12. Chapter 12: JavaScript and the Ajax API 13. Chapter 13: Internationalization and Languages 14. Chapter 14: Batches, Queues, and Cron 15. Chapter 15: Views 16. Chapter 16: Working with Files and Images 17. Chapter 17: Automated Testing 18. Chapter 18: Drupal Security 19. Index 20. Other Books You May Enjoy

Cron

In the previous section, we created an awesome multi-request batch processing of our JSON product import. In the next section, we’ll jump into the Queue API and see how we can plan the processing of multiple items at a later stage. However, before we dive into that, let’s talk a bit about how the Drupal cron works and what we can do with it. This is because our discussion about the Queue API is closely related to it.

Drupal doesn’t actually have a fully-fledged cron system. That is because it’s an application and not a server capable of scheduling tasks that run at specified times of the day. However, what it does have is a cron-like system, which can come very close, especially on busy websites. Often, it is affectionately referred to as the poor man’s cron. Why? Since Drupal cannot by itself do anything without any sort of input, it relies on visitors coming to the website to trigger the cron tasks. So, even if we can configure the frequency...

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