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List:       haproxy
Subject:    Re: Still dropping TS sessions.
From:       Willy Tarreau <w () 1wt ! eu>
Date:       2009-07-27 18:39:32
Message-ID: 20090727183932.GB22669 () 1wt ! eu
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Hi Guillaume,

On Mon, Jul 27, 2009 at 09:33:07AM -0400, Guillaume Bourque wrote:
> > > But has any one looked at doing a SourceIP persistence which is not a
> > > hash i.e. a look up table of source IPs?
> >
> > We wanted to work on it but don't have the time to do everything, so... one
> > thing at a time :-)
> 
> 
> Why not just balance base on the source IP it work well for us, maybe I'm
> missing something here ;-)

it's slightly different. Balancing on source IP is equivalent to
source IP persistence as long as the number of servers does not change.
When you lose one server, you redispatch everyone, which is not always
the best thing to do with some protocols with which you want the user
to remain on the same server (eg: RDP). However, I agree that for most
uses, source IP hashing is fine (eg: SSL frontends).

Regards,
Willy


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