title: How to configure second level cache in Hibernate 4.1.5 SP1?
body: <p>I have read other threads on here about this subject but none of the solutions work for me.</p>
  
  <p>I tried putting this in my hibernate.cfg.xml:</p>
  
  <pre><code>&lt;property name="hibernate.cache.region.factory_class"&gt;org.hibernate.cache.spi.EntityRegion&lt;/property&gt;
  </code></pre>
  
  <p>I always get this error:
  <em>could not instantiate RegionFactory [org.hibernate.cache.spi.EntityRegion]</em></p>
  
  <p>I also tried most suggestions from threads on Hibernate websites but no luck.</p>
  
  <p>So how do I configure this?</p>