Are pages taking too long to load?
In the Drupal Template System, you can clear the cache on a page by page basis. If you are logged in and part of the site administrators role, you can see a button on the top right-hand side of the page labeled Refresh this page.
Click the button to clear the Varnish cache for that specific page. Varnish is a caching component that sits in front of your Drupal site in order to speed up the rendering process of a page.
Note that if you have a webform and it is protected by Captcha, the webform cannot be behind Varnish -- so any webform content will not have the Refresh this page button.