title: Rails.cache.clear certain key names?
body: <p>Is it possible to somehow run <code>Rails.cache.clear</code> and only clear keys with a certain name/string?</p>
  
  <p>I don't want to clear the entire cache...just keys with the string <code>blog/post</code> in the name (ie. <code>blog/post/1</code>, <code>blog/post/2</code>).</p>
  
  <p>I'm using <a href="https://github.com/mperham/dalli" rel="noreferrer">dalli</a> with memcached for my cache and running Rails 3.0.6.</p>