Drupal's caching system spans multiple layers. When any one of them is wrong, you pay for it — in stale content, missed invalidations, or performance that doesn't survive real traffic. This training gives your team a working mental model of the full stack, from render arrays to CDN edge.

What the training covers

A 45 minute walkthrough of Drupal's caching architecture, followed by 15 minutes of open Q&A with your team.

Cacheable metadata: how cache tags, cache contexts, and max-age flow through the render pipeline and why getting them wrong cascades everywhere.

Cache backends: how Drupal stores and invalidates cache items, and how backend choice affects performance and correctness.

Render caching: how fragment caching works, how Variation Cache fits in, and how to avoid common render cache pitfalls.

HTTP caching headers: how Drupal generates Cache-Control, Vary, ETag, and related headers based on cacheable metadata, and what reverse proxies do with them.

Reverse proxies and CDNs: how Drupal exposes cache tags through headers, how the Purge module integrates with Varnish and CDNs, and how to configure Drupal to work correctly behind a proxy.

Debugging: practical tools and techniques for inspecting cache metadata, verifying cacheability, and diagnosing cache failures in development and production.

Writing cacheable code: patterns for custom modules: cacheable responses, cache context dependencies, lazy builders, cache stampede prevention, and testing cache metadata.

Who this is for

Developer teams at agencies building or maintaining Drupal sites. The training assumes familiarity with Drupal development — it's not an introduction to Drupal, it's a deep dive into the caching layer most teams only partially understand.

Format

45 minute presentation + 15-minute Q&A

Remote, via video call.

$500 per session

This training is based on my book, Understanding Drupal: A Complete Guide to Caching Layers. If your team wants to go deeper after the session, team discounts on the book are available directly on Leanpub.

Book a session

Contact me to check availability and get your team scheduled.