title: Memcache invalidate entries according to a pattern?
body: <p>Is there a way to invalidate entries in memcache according to a wildcard key? </p>
  
  <p>So if I have the following memcache keys:</p>
  
  <pre><code>data/1
  data/2
  data/3
  </code></pre>
  
  <p>Is there a way I can invalidate those keys with something like <code>data/*</code>?  It would be extremely helpful to clear out a bunch of stale data in one swoop.</p>