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Mason and Squid can play very nicely together, if you use the httpd
accellerator feature of squid. The basic idea is to put squid in
front of apache. The easy way (at least for simple systems) is to
configure squid to listen to your ethernet interface on port 80, and
configure apache to listen only on your localhost (
interface, also on port 80. The path for a http request is thus:

your.ip.address:80 -> squid -> -> apache

Here is how I configured things.

In squid.conf:
httpd_accel_port 80
httpd_accel_uses_host_header on
httpd_accel_single_host on

In httpd.conf
Port 80

Now the only remaining problem is letting squid know when a page has
changed. You need to write a subroutine that decides whether or not a
given request is for a static page, and hence can be cached. Just
plug that subroutine into your handler routine as follows:

sub handler {
if (is_a_static_page( $r->uri )) {
$r->set_last_modified((stat $r->finfo)[9]) unless $r->uri =~ /index\.s?html/;
# I want my index.html pages to run through Mason, not Squid, ymmv.

And voila, squid will be serving your static pages (and all of your
images, I might add) without having to fire up an instance of
httpd/mod_perl. The load on my server was drastically reduced, and
there was more joy in userland.

-- HenryLaxen