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Proxy to a rack application in a separate process.

An issue filed for pow piqued my curiosity. After itching, this is what I came up with.


You can't run multiple rails applications in the same process. Instead, we can load those applications in separate processes and compose them using Rack.

Here's a simple example which does just that:

require 'rack'
require 'rack-process'

run \
  "/first" =>'/path/to/rails-app-1'),
  "/second" =>'/path/to/rails-app2')



  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request