Preparations (preferably done before the workshop)

• Get latest drupal 8.
• cd modules/contrib
• git clone https://github.com/czigor/mycache.git
• drush en mycache
• Create 2 additional authenticated users and a node.
• Prepare a database viewer tool (phpmyadmin, mysql workbench)
• Go to /mycache

Without page cache, dynamic_page_cache and big_pipe

drush pm-uninstall page_cache dynamic_page_cache big_pipe -y

Answer the following questions for anonymous user and the two authenticated ones. After changing code/enabling a module use drush cr to empty cache tables.

1. No #cache property 1. What is in the cache_render table? (keys, tags, data) 2. What is in the cache_dynamic_page_cache table?
2. Same a) and b) adding only ['#cache']['keys'].
3. Same a) and b) adding ['#cache']['contexts'].

drush en page_cache

Same questions 1-3.

drush en dynamic_page_cache

Same questions 1-3.

drush en big_pipe