title: How to deal with expiring item (due to TTL) in memcached on high-load website?
body: <p>When you have peaks of 600 requests/second, then the memcache flushing an item due to the TTL expiring has some pretty negative effects. At almost the same time, 200 threads/processes find the cache empty and fire of a DB request to fill it up again</p>
  
  <p>What is the best practice to deal with these situations?</p>
  
  <p>p.s. what is the term for this situation? (gives me chance to get better google results on the topic)</p>