Plack::Middleware::NeverExpire This middleware adds headers to a response that allow proxies and browsers to cache them for an effectively unlimited time. It is meant to be used in conjunction with the Conditional middleware. INSTALLATION This is a Perl module distribution. It should be installed with whichever tool you use to manage your installation of Perl, e.g. any of cpanm . cpan . cpanp -i . Consult http://www.cpan.org/modules/INSTALL.html for further instruction. Should you wish to install this module manually, the procedure is perl Makefile.PL make make test make install COPYRIGHT AND LICENSE This software is copyright (c) 2015 by Aristotle Pagaltzis. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.