title: Twig output caching
body: <p>I'm new to Twig and like it, but i've got one problem right now.
  I can't find a proper solution for the caching of the output. I have some templates that need heavy database use and should better be cached for some minutes.</p>
  
  <p>But i can't figure out a proper solution because i always did quick and dirty caching and want to find a clean solution now.</p>