Re: Experience with Open Source load balancers?

[matthew zeier <mrz () velvet org>]

>  
> Recommend: F5 and Citrix Netscaler. If you are looking to combine your L7 FW into your LB then you might lean towards 
> NetScaler. If you are looking at seperating those duties you can look at F5. IRules (F5) are the bomb.

Except that under (Mozilla) load, Netscaler fell apart.  F5, at the time, could not handle the logging rate I required. 
 Mozilla load is typically defined as high connection rate, low traffic per connection and mostly all SSL.  

During the Firefox 4 release, we peaked globally at 12Gbps, a significant portion of which was pushed out of three Zeus 
clusters with L7 rules and some non-trivial traffic script rules and a heck of a lot of content caching.  Of all the 
systems seeing increased usage during the Fx4 release, this wasn't where my worries were :)

A slightly older post,

http://blog.mozilla.com/mrz/2008/12/04/load-balancer-performance-issues-fxfeedsmozillaorg-versioncheck/