title: My cache is being flushed, why?
body: <p>I'm having some problem with my app cache being flushed (page, action and fragment cache).</p>
  
  <p>It looks like (according to the memcached IRC and the logfiles) the cache is being flushed very often, even though the cache isn't full.</p>
  
  <p>I'm using:</p>
  
  <ul>
  <li>memcached 1.4.5</li>
  <li>rails 3.1.0.rc6</li>
  <li><a href="https://github.com/mperham/dalli" rel="noreferrer">dalli 1.0.5</a></li>
  </ul>
  
  <p><a href="https://gist.github.com/1169246" rel="noreferrer">Here is data</a> being printed when running <code>stats</code> using telnet.</p>
  
  <p>I'm not using any <code>expires_in</code> options when saving data to the cache.
  Instead I use sweepers to flush the cache manually every night.</p>
  
  <p>Anyone got an idea why this is happening?</p>