Hi Benjamin,

> 1) Logging performance data:
>         A) How long before the page started putting out data? (implying that 
> the
> server side is done processing, though not necessarily)
>         B) How long did the whole cycle take from initial connection to end of
> download?

Turn on "option httplog", these information are available (read the
relevant part of the documentation to find where).


> 2) Is there a way to anti-DDOS based on a cookie? (Really, we want to filter
> based on user/login but that isn't actually part of the HTTP session, that's
> determined by the cookie) W

You can get inspired by these two articles:
http://blog.haproxy.com/2012/02/27/use-a-load-balancer-as-a-first-row-of-defense-against-ddos/
http://blog.haproxy.com/2013/04/26/wordpress-cms-brute-force-protection-with-haproxy/

It applies DDOS protection matching IPs. But HAProxy could perform the
same on a cookie.


> 5) Is there a relatively simple way to get "true HA" with a redundant load
> balancer? We have two identical machines side-by-side running EL6 and haproxy,
> one is a disk dd of the other. In the past we used heartbeat with limited
> success; pacemaker has been very problematic for us. For now, we're managing
> manually.


We use keepalived a lot :)

Baptiste

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