title: Is @Cacheable aware of the 'Thundering Herd' problem?
body: <p>The "thundering herd" problem occurs in a highly concurrent environment (typically, many users). When many users make a request to the same piece of data at the same time, and there is a cache miss (the data for the cached element is not present in the cache) the thundering herd problem is triggered.</p>
  
  <p>I couldn't find an evidence that <a href="http://code.google.com/p/ehcache-spring-annotations/wiki/UsingCacheable" rel="noreferrer">ehcache-spring-annotations</a> is adressing this problem.</p>
  
  <p>Do I've to write a wrapper and use the explicit locking mechanism?</p>