The cs_cdn Extension replaces local file references in the html page with references to remote files, allowing to host files on a Content Delivery Netwerk (CDN) server. It is possible to activate a button with the delete Key CDN cache function.

Feel free to test and give feedback.

More information

TYPO3 Repository - Official dowload page
Extension Manual - Official documentation with all features and configurations
clickstorm Blog - Current information in german