UrlPipe was my first app built with node.js and Redis.
I wanted to easily suck files down off the Internet and straight to Dropbox, without doing the download-upload dance. It’s particularly for mobile devices or computers which don’t have the Dropbox client installed (like my work laptop).
The core was written an a day but I’ve tweaked the architecture and code over time. It now uses an autoscaling worker infrastructure (on Heroku), mediated using Redis as a basic store and queue.
The source code is available on Github or just start using the app right now