Mod perl
mod_perl is an optional module for the Apache web server.
It embeds a Perl interpreter into the Apache server, so that dynamic content produced by Perl scripts can be served in response to incoming requests, without the significant overhead of re-launching the Perl interpreter for each request.
mod_perl can emulate a CGI environment, so that existing Perl CGI scripts can benefit from the performance boost without having to be re-written.
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