[Zope-Annce] ANNOUNCE: Pound - reverse proxy and load balancer - v0.2
Mon, 3 Jun 2002 03:26:29 +0200
This is to announce the release of Pound v0.2.
Changes from previous version:
- added HTTP/HTTPS request checking. Pound will only accept well-formed
requests, thus protecting the back-end server(s) from malicious clients. I
believe that this is now good enough to allow a ZServer to run without an
Apache/Squid front-end (though you may still want Squid as a cache manager).
- added request logging (can still be turned off with a flag). This means
that now there is a central log with the correct client addresses.
- fixed a few minor bugs.
Many thanks to all the people who responded with suggestions and remarks.
A few people asked why not simply use Squid rather than Pound. The answer is
mostly a question of taste and philosophy: I believe a load-balancer should
do no caching. The load-balancer, by its very nature, may become a
bottle-neck for the whole system, and thus should be as light-weight as
possible. If your application could really benefit from a front-end cache
(which is not always the case) then put the caching proxy on the back-end
server - e.g. between Pound and Zope - but allow Pound to run alone on a
What is Pound (from the Web page)
- a reverse-proxy: it passes requests from client browsers to one or more
- a load balancer: it will distribute the requests from the client browsers
among several back-end servers, while keeping session information.
- an SSL wrapper: Pound will decrypt HTTPS requests from client browsers and
pass them as plain HTTP to the back-end browsers.
- an HTTP/HTTPS sanitizer: Pound will verify requests for correctness and
accept only well-formed ones.
For further information, download, etc. please see http://www.apsis.ch/pound
The software is at version 0.2. Further testing (especially under heavy
loads), improvements and bug (what bugs ?) fixes are welcome.
Pound is distributed under the GPL.
Enjoy and let me know how it works for you.
Postfach, Uetikon am See, CH-8707
Tel: +41-1-920 4904