ActionView::Helpers::CacheHelper

@jcoglan Our caching "system" is this method: + AR#cache_key + AR#touch.

This helper exposes a method for caching fragments of a view rather than an entire action or page. This technique is useful caching pieces like menus, lists of newstopics, static HTML fragments, and so on. This method takes a block that contains the content you wish to cache. See ActionController::Caching::Fragments for usage instructions. Examples If you want to cache a navigation menu, you can do following: <% cache do %> <%= render :partial => "menu" %> <% end %> You can also cache static content: <% cache do %> <p>Hello users! Welcome to our website!</p> <% end %> Static content with embedded ruby content can be cached as well: <% cache do %> Topics: <%= render :partial => "topics", :collection => @topic_list %> <i>Topics listed alphabetically</i> <% end %>

Full article: http://api.rubyonrails.org/classes/ActionView/Helpers/Cac...