mod_perl Developer's
Cookbook, by Geoffrey Young, Paul Lindner, and Randy
Kobes (Sams Publishing). Selected chapters and code examples
available online from https://www.modperlcookbook.org/.
For more information about signal handling, refer to the
perlipc manpage
GET and POST request methods
are explained in section 9 of RFC 2068, "Hypertext
Transfer Protocol—HTTP/1.1"
Cookies
RFC 2965 specifies the HTTP State Management Mechanism, which
describes three new headers, Cookie,
Cookie2, and Set-Cookie2, that
carry state information between participating origin servers and user
agents