At 07:55 PM 2/4/00 +0200, Stas Bekman wrote:
> > At 06:17 PM 2/4/00 +0200, Stas Bekman wrote:
> > >The next module is Apache::RegistryNG.
> > >
> > >C<Apache::RegistryNG> is the same as C<Apache::Registry>, aside from
> > >using filename instead of URI for the namespace. It also uses OO
> > >interface.
> > >
> > > <snip>
> >
> > >There is no compelling reason to use C<Apache::RegistryNG> over
> > >C<Apache::Registry>, unless you want to do add or change the
> > >functionality of the existing I<Registry.pm>. For example,
> > >C<Apache::RegistryBB> (Bare-Bones) is another subclass that skips the
> > >stat() call performed by C<Apache::Registry> on each request.
> >
> >
> > >One situation where Apache::RegistryNG may definitely be required is if
> > >you are rewriting URLS (using either mod_rewrite or your own
> handler) in
> > >certain ways.
> >
> > For instance if you have a rewrite rule of the form XYZ123456.html ==>
> > /perl/foo.pl?p1=XYZ&p2=123456
> > Apache::Registry loses big, as it recompiles foo.pl for each unique
> > URL. We ran into this and were totally baffled as to why we had no
> > mod_perl performance boost until Doug pointed us to RegistryNG, which is
> > definitely your friend in these circumstances.
>
>Huh? Why would Apache::Registry recompile /perl/foo.pl ?
>
>p1=XYZ&p2=123456 is a query string and it doesn't affect the created
>script's package name. Do I miss something?
Yup, or I wasn't clear enough . The point was that we had a whole class of
URLS that would yield different package names for Registry, even though
they were all being processed by the same file.
Add to my example above another rewrite: ABC999999.html =>
/perl/foo.pl?p1=ABC&p2=999999...
(and another, and another...)
They all yield different package names based on the original URL (at
least if you use mod_rewrite), so Registry has no way of knowing that they
are all processed by the same script. RegistryNG doesn't have this problem,
since the package name is based on $r->filename, which is the same for all
of them.
- Simon
>_______________________________________________________________________
>Stas Bekman mailto:[EMAIL PROTECTED] http://www.stason.org/stas
>Perl,CGI,Apache,Linux,Web,Java,PC http://www.stason.org/stas/TULARC
>perl.apache.org modperl.sourcegarden.org perlmonth.com perl.org
>single o-> + single o-+ = singlesheaven http://www.singlesheaven.com
-----------------------------------------------------
Simon Rosenthal ([EMAIL PROTECTED])
Web Systems Architect
Northern Light Technology 222 Third Street, Cambridge MA 02142
Phone: (617)577-2796 : URL: http://www.northernlight.com
"Northern Light - Just what you've been searching for"
