One congestion-control parameter which don't get it's fair share of articles is initcwnd. And for HTTP traffic over high bandwidth+latency links it has much larger impact than the choice of the cc algorithm.
Initcwnd is set 10 in just about every distro and has been for some time now. Initcwnd only comes into play at the beginning of a new connection, it isn't as important for LFNs as TCP buffer sizes. But at any rate this post is concerned with edge networks so there shouldn't be any LFN network at all.
> and I’m not even talking about IW10 (which is so 2010)[1]
[1] https://developers.google.com/speed/protocols/Increasing_TCP...