[Zope] ZServer/Apache/Zeus and FastCGI

[Evan Simpson]

ZServer/Apache/Zeus and FastCGI----- Original Message -----
From: Bostick, Aaron
> Does any one have any experience running Zeus with Zope and is it worth
the $1700 bucks in terms of performance in the "real world"?

As far as I know, demand in the "real world" rarely makes the average static
webserver break a sweat.  Unless your projected demand is huge, you should
be perfectly happy with Zeus, Apache, or Roxen.  It's the dynamic content in
Zope which is likely to be the bottleneck.

> Also,  I noticed the announcement concerning FastCGI support in the latest
Zope release.  Will this work with Zeus and or Apache?

Works with Apache, certainly.  I don't know about Zeus.

> Is it totally necessary to run ZServer or can Apache/Zeus replace it
totally?

ZServer is the communications module of Zope, and is necessary whether you
use it to serve web requests directly or through PCGI or FastCGI with
another webserver.

> What I would like to know is if there are any easy ways to replicate the
ZODB information across web
> servers if I am running a web farm?  In other words,  I plan to have
multiple identical web servers sitting
> behind a load balancing appliance so that incoming requests can be sent to
any of the web servers.
> Obviously, the web servers must contain the same data for this to be of
any use.  If I plan to run a web
> server and the zope engine on each "web server", how can i replicate
changes to all my servers to keep
> them synced.

ZEO is the subsystem of Zope which handles this.  It allows you to run each
Zope server as a client of a central storage server, automatically
replicating writes to each server as they occur.  Alternatively, if all
writes are directed at a SQL server, and changes to Zope objects only take
place on a development system, you can periodically copy the object
repository file to each of the Zope servers and restart them.

For more info, see http://www.zope.org/Products/ZEO

Cheers,

Evan @ 4-am & digicool