An Introduction to Caches in Drupal

High-level introduction to caches in Drupal, contextualizing and correlating the diverse caching systems that may come into play in a Drupal site, with the aim of providing a comprehensive and understandable overview of this topic.

Previous knowledge is not required, as we will start from the very basics, providing a definition of cache and some basic concepts, to gradually move on to more complex topics. 

Index:

• General introduction
• PHP: OPcache
• Drupal core (Cache Backend, Cache Services, Cache API, Dynamic Page Cache, Internal Page Cache).
• In memory caching (Memcached)
• Cache proxy (Varnish)
• CDN.