Re: [Linux-l7sw-devel] New Layer7 switching project

[Willy T. <w...@1w...>]

Hi Alex, Hi Jacob,

On Thu, Dec 14, 2006 at 01:03:30PM +0100, Alexandre Cassen wrote:
> Hi Jacob :)
> 
> > What about the haproxy-project as found on http://haproxy.1wt.eu/
> > That's a great level-7 switching project. If you are concerned about
> > memory usage or context switching, try it first. It runs in a single
> > threads and uses 'select' as its sole dispatcher.
> 
> sure I am aware of Willy work ;) and we off-line spoke about this. The
> framework I will try to propose with L7SW project is for high perf relay
> using kernel machinery and haproxy can be extended to use this
> machinery.

I can quite confirm this. Right now I'm very busy working on implementing
content-switching (URL switching, virtual hosts support, etc...), and of
course with my job, but I firmly intend to try to port haproxy to support
Alex's work. It will also be a very interesting solution to measure the
gains it provides (and I expect a lot on large files).

> > But you might have good reasons not to rely purely on level-7 proxies. 
> > However, since existing cookies can be used to remember to which real
> > server a request should be forwarded, session-data can be stored
> > locally. This is a great advantage over level-4 loadbalancing.
> 
> exactly my focus :) during next week-end I will try to find time to work
> on loadbalancing support and regexp support (will dig in pcre engine for
> highspeed parsing).

Alex, if I may suggest, you should not lose too much of your time on exotic
features for a proof of concept. Your time seems more valuable to me on hard
to solve problems such as MSS and window scaling where fewer people can work
than regex. Better add a wishlist to the project with difficulty levels ;-)

Cheers,
Willy