title: NHibernate cache expiration
body: <p>I use custom developed ORM currently and am planing to move to nhibernate.</p>
  
  <p>Currently, I use both L1 - session level caching and L2 - Application level caching.</p>
  
  <p>Whenever an object is requested from L2 cache by L1 cache, it checks database for modified since last load, and loads only if it has been modified.</p>
  
  <p>Can I do this with NHibernate. In short, caching does not hurt me as it always gets most recent data and saves me object creation and load times.</p>