Hi,

how about offering a configuration flag in the near future to set a flat
based SLB feature in pound an make it possible to decrease the load
regarding response/reply traffic from the backend servers to the client.
To make it possible to pass session/cookie based connections always to
the same backend server it would be possible to have the first
backend-server answer be handled by pound to notice the cookie or
session info and after that only pass on the requests.

Example:

1. First appearance of client

client -> pound -> backend 
backend -> pound -> client

2. handling of "known" clients

client -> pound (modify ip packets) -> backend 
backend -> client


If somebody is not familiar with the term "Flat based SLB" take a look
at the rough definition at wikipedia:
http://de.wikipedia.org/wiki/Server_Load_Balancing#Flat_based_SLB

Regards
JJ

On Wed, 2007-03-28 at 11:48 +0200, Jens Parree wrote:[...]

You can achieve this with a simple Redirect. IP spoofing is not planned
as a Pound feature.[...]

This term "Flat-based server load balancing" is more often called "Direct
Server Return" (at least in English).

You can achieve some impressive throughput this wa, especially if you are
serving large objects, but with the increased speed of modern machines and
LAN's, this is much less interesting than it was a few years ago.
Maintaining these systems can be fraught with difficulty because you are
purposely defeating several assumptions of normal networking when you spoof
the IP address.

See the LVS project for an implementation if you really must have this
feature. 


On 3/28/07 10:03 AM, "Robert Segall" <roseg(at)apsis.ch> wrote:
[...][...][...]

I also just need a way to also descrease the amound of parallel TCP connections
to the pound mashine.
 
Anyway, thanks so far.
 
[...]