The Edgecast module provides automatic purging (via nodeapi) and manual purging (list of URLs) of cached content from the Edgecast Content Delivery Network (CDN).
Autload JS automatically loads javascript files found in your theme's "js" subfolder.
Which files it loads depends on which page the user is viewing and where you put the files. It will load all files in the 'all' folder on every page, or all files in the 'front' folder on the front page. Options for page path, node type, first component of the URL, and more exist.
For example, as soon as it's turned on, your javascript files are loaded automatically just by naming them right:
path/to/theme/js/all.js - Loaded on all pages
path/to/theme/js/front/file1.js - Loaded on front page
path/to/theme/js/front/file2.js - Also loaded on front page
path/to/theme/js/nodetype--blog.js - Loaded on blog nodes
etc.