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Re:R3 bindings for Node.js by sjtgraham on Friday July 18, 2014 @09:28AM (#8052875)
Finding a match in a tree structure is asymptotically O(log n), finding a match in a list is O(n). This router is also written in C.

There is a benchmark in the README comparing R3 to the Rails router and also to a replacement Rails router that I wrote for non-performance related reasons.

It should be noted that usually only a tiny proportion of the time taken to respond to a request is spent in route recognition. YMMV.

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