Apply cache metadata and invalidate cache bins for Drupal 11 sites.
npx skills add https://github.com/edutrul/drupal-ai --skill drupal-caching-edutrul
Please help me install this Agent Skill. Skill: drupal-caching Source: https://github.com/edutrul/drupal-ai/tree/main/.claude/skills/drupal-caching Command: npx skills add https://github.com/edutrul/drupal-ai --skill drupal-caching-edutrul
Drupal caching prevents stale content and poor performance by enforcing proper cache metadata and structured cache strategies. Without clear tags, contexts, and max-age, dynamic content may be re-rendered unnecessarily or served stale.
Add render array cache metadata (tags, contexts, max-age) and use CacheBackendInterface to store and invalidate the cached data.
High-intent search queries and answers about installing and using this skill.
To add cache metadata to Drupal render arrays, you must attach cache tags, contexts, and max-age properties. This ensures dynamic content invalidates correctly and prevents serving stale data across node views or config forms.
Cache tags track dependencies for invalidation, cache contexts create variations based on request data like user roles, and max-age defines time-based expiration. Together they form the cache metadata structure required for correct Drupal rendering.
You can read and write to custom cache bins in Drupal by using the CacheBackendInterface within your custom services. This allows granular storage and retrieval of cached data across default, render, data, and config bins.
Tag-based cache invalidation in Drupal works by associating cache items with specific metadata tags. When underlying content changes, invoking invalidation for those tags automatically clears all cached items marked with them.
Yes, you can use cache contexts to vary user-specific pages in Drupal 11. By applying contexts like user roles or permissions to render arrays, the caching system generates and stores distinct cached versions for each user variation.
Your Drupal site serves stale content after updates because render arrays lack proper cache metadata. Without defining accurate cache tags for underlying entities, the caching system cannot detect dependencies and fails to invalidate the outdated renders.
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