Sams Teach Yourself CGI in 24 Hours, Second Edition

Q&A

Q1:	What is the performance difference between CGI.pm and cgi-lib.pl ?
A1:	Under some situations, using cgi-lib.pl instead of CGI.pm can reduce compilation time for CGI programs by half. If performance is a big issue, you might consider using cgi-lib.pl. Most Perl programmers who are confronted with performance constraints tend to lean toward using mod_perl to execute their programs. This alternative is discussed in Hour 12, “Pros and Cons of Alternate Technologies.”
Q2:	Is it okay to use code downloaded from CPAN on commercial sites?
A2:	This varies depending on the license for the individual module you’re downloading. However, as a general rule, if it’s okay to use Perl for a task, it’s okay to use modules downloaded from CPAN for that ...