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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
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Daniel Sipos
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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

Cacheability metadata

Cacheability metadata is used to describe the thing that is rendered with respect to its dynamism. Most of the time, as Drupal module developers, we will be using this metadata when working with render arrays. We will see a bit later where else these come into play, but for now, let’s see what the actual properties are and what they are used for in the context of render arrays.

When creating render arrays, there are a few things we need to think about when it comes to caching. And we always need to think about these things.

Cache tags

The first thing we need to think about is what our render array depends on. Are we rendering some entity data? Are we using some configuration values? Is anything that might be changed elsewhere, impacting what we have to render? If the answer is yes, we need to use cache tags. If we don’t use them, our render array gets cached as it is, and if the underlying data changes, we end up showing our users stale...

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