```ruby
class HomeController < ApplicationController

  caches_action :index, :expires_in => 1.hour, :if => lambda { !user_signed_in? || !admin_signed_in? }

  def index
    render
  end
end
```

Fix caching of start page, just dont do for user or admins.
user
```ruby
class HomeController < ApplicationController

  caches_action :index, :expires_in => 1.hour, :unless => lambda { user_signed_in? || admin_signed_in? }

  def index
    render
  end
end
```
assistant