Hank Beaver » posix http://www.hankbeaver.com Ruby, open-source, Internet technologist located in Atlanta, GA, USA Tue, 29 Jun 2010 05:34:15 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Reminder to self and world: Varnish uses POSIX regex. http://www.hankbeaver.com/index.php/2009/07/14/reminder-to-self-and-world-varnish-uses-posix-regex/ http://www.hankbeaver.com/index.php/2009/07/14/reminder-to-self-and-world-varnish-uses-posix-regex/#comments Tue, 14 Jul 2009 19:26:45 +0000 hbeaver http://www.rubyslacker.com/?p=91 What does this mean? Well for starters, those nice little PCRE shorthands for character classes just don’t work! So putting this in your Varnish VCL will silently do nothing:

if (req.url ~ "/\d+(/$|/\?|\?|$)") ...

whereas this match: 

if (req.url ~ "/[0-9]+(/$|/\?|\?|$)") ...

Enjoy.

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