title: When using ehcache, what synchronization do I need to do?
body: <p>Let's say I start with a single CacheManager like this:
      private static CacheManager manager = CacheManager.create();</p>
  
  <p>When I call getCache or addCache do I need to synchronize on the CacheManager first?</p>
  
  <p>When I call put or get on the Cache, should I synchronize on the Cache first?</p>