DrupalCon Prague 2013: TAG, YOU'RE IT! KEEP YOUR REVERSE-PROXY CACHE UP-TO-DATE

This talk focuses on enhancing the performance and scalability of Drupal sites through effective use of reverse-proxy caches such as Varnish, Squid, and Nginx. The speaker discusses the limitations of current cache invalidation methods, highlighting the challenges Drupal users face with stale content even after updates. They introduce a solution developed at Columbia Law School, the HTTP Cache Tag Auto module, which addresses these issues by automatically tagging and invalidating pages based on various parameters. The session also explores advancements in caching strategies with Drupal 8 and Varnish cache tagging to ensure users always receive the most current content.