[go-nuts] project idea: TeeReverseProxy clone http requests to send to 2 servers

I have a requirement and want to check whether there are already anything
out there.

Normally, reverse proxy will forward requests to one server, or load
balance to multiple servers but still just forward one request to one
server. I want to clone the requests, send to two servers, one production
server and one benchmarking server, and return results from production
server, ignoring results from the benchmarking server.

This would be a good tool to test new systems. With some modification, we
can use this to pick fastest result from one of the two servers.

Chris

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On Tuesday, September 24, 2013 3:03:33 PM UTC-7, Kyle Lemons wrote:

If you don't need to wait for the bench server, you can probably just
send off a parallel request in its own goroutine from the Director hook.

On Tuesday, September 24, 2013 3:15:25 PM UTC-7, ChrisLu wrote:

Thanks for the tip. I also need to clone the http request. Current
http.Request.Body is just ReadCloser. The same request can not be used
twice.

The MultiWriter is handy to clone the request.

Chris

Golang rocks! Here is my initial version, and it works fine! Talk about
productivity!

https://github.com/chrislusf/tee-proxy

Chris

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