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On Fri, 2004-12-31 at 10:01 +0800, cheaney Chen wrote:
> Hi,
>
> There are a lot of different kinds of SLB techniques, ex. DNS-based,
> Dispatcher-based(like LVS), and server-based , etc.
> And my question is, for a commercial web site (like yahoo or ...)
> how to do SLB.
> What methods are used to handle huge numbers of client's requests?
> Combination of SLB techniques above , or ... ?!
>
I've used LVS for frontend balancing, and this for backend:
www.backhand.org
In short, mod_backhand takes specific resource-intensive requests and
proxies them to whichever servers are least busy. It works *VERY* well.
We have a farm of cheap boxes serving lots of CPU intensive requests and
every box has the same exact load average within 2-3%. It even allows
persistence. Only downside is it requires Apache 1.3, but so far that
hasn't been a problem for us. :)
> Thanks for your reading.
>
> cheaney
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--
Clint Byrum <cbyrum@xxxxxxxxxxx>
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