| Module | ActionController::Caching::Pages::ClassMethods | 
| In: | lib/action_controller/caching/pages.rb | 
Manually cache the content in the key determined by path. Example:
cache_page "I'm the cached content", "/lists/show"
Caches the actions using the page-caching approach that‘ll store the cache in a path within the page_cache_directory that matches the triggering url.
Usage:
  # cache the index action
  caches_page :index
  # cache the index action except for JSON requests
  caches_page :index, :if => Proc.new { |c| !c.request.format.json? }