App structure

• app All application code. This folder is completely untouched on instances. This folder is completely replaced with updates
  • admin
  • data
  • scripts
  • file.php
  • index.php
  • setup.php
• cache All pre-computed values that can be completely rebuild
• logs All applications logs in day-by-day files
• modules Installed modules per folder
• user All instance content and settings goes here
  • filesystem Manageable file system
  • public User custom content. It's accessible under ~/public/....
  • instance.inc.php Connection to database and other instance specific configuration. If does not exist, setup.php is shown.
  • readme.txt Instance specific notes.
• .htaccess Main router.