drupal-lazy-builders

Use Drupal lazy builders to defer rendering dynamic content behind cacheable placeholders in render arrays. This preserves page caching while delivering personalized elements by isolating non-cacheable sections with '#lazy_builder' and '#create_placeholder'.

Use Drupal lazy builders for pages with user-specific data, session-based content, or uncacheable sections. They isolate non-cacheable parts behind a cacheable boundary, allowing the main page to remain cached while personalized elements render independently.

Yes, implementing TrustedCallbackInterface is required to securely invoke Drupal lazy builders. It ensures the callback function is explicitly trusted, preventing unauthorized code execution when deferring dynamic content rendering in render arrays.

No, Drupal lazy builders require scalar-only arguments. Passing objects or arrays as arguments breaks the placeholder generation process, preventing the system from isolating and caching the dynamic content effectively.

Yes, BigPipe integrates with Drupal lazy builders to stream personalized content. Combined with '#create_placeholder' and per-user caching contexts, it isolates non-cacheable content and improves authenticated user performance by sending cached page shells first.

The best way to isolate session-based content is using '#lazy_builder' with '#create_placeholder' in your Drupal render array. This defers the dynamic rendering, keeping the main page cache valid while replacing the placeholder with personalized data.