title: How to clear the configuration cache in Symfony2?
body: <p>I am using Symfony2. I have a <code>config.yml</code> with users setting. In my development environment, if I change the list of users and refresh the browser, I see the change immediately. In production, I do not see the change, even though I have tried clearing the cache.  What do I need to do to see the configuration change in production?</p>