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by wasd 4419 days ago 

  > The old story of linkedin where moving to Node.js from Rails 
  > for their mobile traffic, reducing the number of servers from 30 to 3 
  >(90% reduction) and the new system was up to 20x faster.
It isn't as simple as that. There was a great article from a former linkedin engineer about why the original API server was so slow. [0]

[0]: http://ikaisays.com/2012/10/04/clearing-up-some-things-about...
1 comments
awj 4419 days ago
Yeah, of course the thing was faster. I would be upset if you didn't get this result after rewriting from a crufty old system that was never intended for the purpose it's serving into new code that uses appropriate technologies and benefits from all of your experience.

Other than Rails vs. Node as an appropriate platform for proxying slow api requests, the technology involved is basically irrelevant here.

link