module ActionController::Caching

def cache(key, options = {}, &block)

Convenience accessor 
def cache(key, options = {}, &block)
  if cache_configured?
    cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
  else
    yield
  end
end

def caching_allowed? 

def caching_allowed?
  request.get? && response.status == 200
end