Minimal file upload daemon using Rainbows

Rails plugin here: paperclip_uploadd

gem install rainbows
gem install rack-contrib
git clone git:https://github.com/capotej/uploadd.git

Edit config.ru and change SECRET to something secure, like the word "password"

cd /path/to/uploadd
nohup rainbows &

That's it! Now you should have a scalable upload server running on :8080

Here's an example of how to use it (requires httpclient gem):

HTTPClient.post 'https://localhost:8080/up', { :file => File.new('/path/to/file.jpg'), :filename => 'users/avatar/12, :secret => "redrum" }

Video of the logs with 10 workers uploading images from another server

Uploadd was written to be as simple as possible so it doesn't check for duplicates, it just overwrites. You can feed the filename param a deep directory structure and it'll create all the directories for you below the UPLOAD_DIR in config.ru

There is a Rails plugin that extends Paperclip to use Uploadd as a backend as opposed to S3 or the local file system, check out paperclip_uploadd.