Modern web browsers support a plethora of plugins to allow content to be displayed inline; once upon a time your mp3 and pdf files would prompt a download box, now more-often than not they are displayed inside the browser.

While no one is arguing that the advancements of inline content displayed in web browsers are not without merit (okay, maybe you can tone down some of the flash...), a webmaster may occasionally wish to force a download box to pop up for one reason or another.

SymPullCDN leverages the free bandwidth, storage and power of Google AppEngine to create a trivial to implement reverse proxy. It has been released to the public for free on github.

The HTTP protocol is rather powerful in and of itself. This is often forgotten as application developers incorporate caching technologies into their code itself. As useful as SQL Query caching and application-level internal caching is, HTTP provides its own caching functions that we would be remiss not to utilize.