drupal-cache-tags

To invalidate Drupal cache tags when an entity changes, apply standard tag formats like entity_type:id to your render arrays. This ensures precise cache invalidation, automatically clearing cached data only when the specific entity is updated.

Drupal cache tag naming conventions use formats like entity_type:id for entities, entity_type_list for lists, and config:config_name for configurations. Custom tags follow the module:identifier pattern to isolate cache invalidation.

A Drupal custom block shows stale content when missing proper cache tags on the render array. Adding the correct entity or custom tags ensures the block's cache is invalidated immediately upon relevant data modifications.

Debug Drupal cache invalidations by inspecting response headers to verify active cache tags on render arrays. Troubleshoot stale content by ensuring tags are properly applied and invalidated during configuration updates or entity changes.

Yes, you need cache tags for Drupal configuration updates to prevent stale content. Apply config:config_name tags to render arrays so cached data is precisely invalidated whenever the matching configuration object is modified.