Consider Adding HAProxy

[tsuckow]

Consider placing HAProxy in front of 65.254.110.245 and 18.218.241.186 to reduce the load on the backend servers.

HAProxy could queue connections so the backend servers are only processing what they can and returning 503 if they sit in the queue too long ("timeout queue" setting).

I've been noticing the client seemingly getting stuck on connections for long periods of time and erroring out with an incomplete response. HAProxy would help keep the connections healthy and turning people away when there are too many requests.