Re: NAT 4 Linux (project)

Nicholas J. Leon (nicholas@binary9.net)
Fri, 21 Aug 1998 22:53:56 -0400 (EWT)


On Sat, 22 Aug 1998, Alan Cox wrote:

# > round robin DNS spreads the load but not evenly (of course neither does
# > this simple version) but the idea of being able to direct traffic to a
# > particular server based on the URL has all sorts of possibilities.
#
# Its also old hat. The front server just needs to run apache and the mod
# rewrite stuff to generate a page back which is a redirect to the real
# site for those pages.

But that isn't efficient in the slightest. From a simple
request->response, you've created a request->redirect->request->response
chain. Add the possibility of the redirect being to a different host and
you can add a slow DNS lookup in the middle of the chain. And if you do
this all transparent to your page authors, then add the potential for a
graphic ladden page to be getting redirects for everything it loads.

I've seen crap like this in action and its scary. Modperl+apache !=
efficient load balancing.

Now, if you could actually hand off the network connection to another box,
without having to send any client-bound messages, that would be cool.

Hmm....

G'day!

-----------------------------------------------------------------------------
Nicholas J. Leon "Elegance Through Simplicity"
nicholas@binary9.net - - http://mrnick.binary9.net

8 4 9 1 7 3 <-- what is the pattern?

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