Found 4 comments on HN
damoncali · 2011-11-17 · Original thread
If you want to use Ruby, this is a good place to start:

http://www.amazon.com/Service-Oriented-Design-Rails-Addison-...

damoncali · 2011-09-16 · Original thread
I can't answer your question directly, but if you choose ruby, this book may be helpful:

http://www.amazon.com/Service-Oriented-Design-Rails-Addison-...

ericxtang · 2011-03-02 · Original thread
We've built an API using ruby on rails. I highly recommend the book written by Paul Dix if that's what you are using.

http://www.amazon.com/Service-Oriented-Design-Rails-Addison-...

grep · 2010-09-07 · Original thread
What about: Service-Oriented Design with Ruby on Rails?

Any comments?

http://www.amazon.com/Service-Oriented-Design-Ruby-Rails-Pau...

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