Rails Caching Basics

Delivered at the 11/2012 UV.rb

Transcript

1. Rails Caching Basics
2. Setup To test caching in dev mode, edit development. rb: config.action_controller.perform_caching = true Normally this should be false
3. Page Caching class UsersController < ActionController caches_page :index def index @users = User.all end ... def create ... expire_page :action => :index end end
4. Action Caching Can be used when you need to be authorized to view a page but want to cache it as well.
5. Fragment Caching cache part of a page <% cache(:action => 'index', :action_suffix => 'all_users')do %> @users.each do |u| ... <% end %>
6. Sweepers More centralized location for taking care of cache invalidation
7. Cache Stores Config config.cache_store = :memory_store config.cache_store = :memory_store, :size => 64.megabytes config.cache_store = :file_store, "path/to/cachedir" config.cache_store = :memcache_store, "cache.example.com"