Fragment caching the refinerycms menu to speed things up dramatically. On Heroku, make sure to use memcached store if you use more than 1 dyno.

fragment caching refinerycms menu

# views/layouts/shared/_menu.html.erb

…
hide_children = RefinerySetting.find_or_set(:menu_hide_children, false) if hide_children.nil?

+ cache('site_menu') do

    collection ||= @menu_pages.includes(:slugs)
    …
    </nav>

+ end


# create sweepers/page_sweeper.rb

class PageSweeper < ActionController::Caching::Sweeper
      
  observe Page

  def after_create(page)
    expire_cache_for(page)
  end

  def after_update(page)
    expire_cache_for(page)        
  end

  def after_destroy(page)
    expire_cache_for(page)
  end
      
  
  private
    
  def expire_cache_for(page)
    expire_fragment('site_menu')
  end
end

# in controllers/admin/pages_controller.rb

  module Admin
    class PagesController < Admin::BaseController

+    cache_sweeper :page_sweeper



# OR if you're not comfortable overriding AdminPagesController inside the actual file: do it in config/application.rb

class Application < Rails::Application
  …

+ config.to_prepare do 
+   ::Admin::PagesController.module_eval %{ 
+    cache_sweeper :page_sweeper
+   } 
+ end

  …
end