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This is big news for Node.JS; I'm surprised this hasn't gotten more attention. Hopefully Groupon will follow up with some more technical details of their transition from Rails to Node.JS and how they evolved their SOA architecture.

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Looks like they moved only the frontend from Rails to Node.js. Rails still existing in their SOA architecture and they still using Ruby/JRuby hardly.

That is true. However, while we still have plenty of RoR code, a lot of our services have moved to Java and Scala.

I work at Groupon. We'll be following up with more details soon!

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