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Re: neural network based load balancing

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: neural network based load balancing
From: Kjetil Torgrim Homme <kjetilho@xxxxxxxxxx>
Date: Sat, 07 Aug 2004 19:57:28 +0200
On lør, 2004-08-07 at 12:02 -0400, Joseph Mack wrote:
> > > Currently realserver failure losses the session.
> > 
> > isn't this solved with ipvsadm --start-daemon? 
> 
> this handles director failure, not realserver failure

oh, duh!

the "simple" and general method of realserver failover is duplicating
the servers:  the director sends a copy of every incoming packet to each
of the server but picks the response from only one of them and sends
back to the client.  this should handle many protocols (but not FTP or
protocols using challenges for authentication) without any changes on
the real server.  this rules out DR, of course.
-- 
Kjetil T.

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