libapache-mod-perl | integration of perl with the Apache web server | Mehr ...
mod_perl allows the use of Perl for just about anything Apache-related, including sections in the config files and the famous Apache::Registry module for caching compiled scripts. . It can produce anywhere from a 400% to 2000% speed increase on sites using perl scripts, and is used on many large script- based web sites - for example, http://slashdot.org.
