imwill.com » cache http://imwill.com Mostly web dev, sometimes food. Thu, 29 Jul 2010 20:17:39 +0000 http://wordpress.org/?v=2.9.1 en hourly 1 How to avoid cache-pollution with TYPO3 http://imwill.com/avoid-cache-pollution-with-typo3/ http://imwill.com/avoid-cache-pollution-with-typo3/#comments Sat, 18 Jul 2009 14:23:56 +0000 Hendrik Will http://imwill.com/?p=8 Did you ever wonder about URLs containing parameters like this: domain.tld/page.html&L=1print=1print=1print=1print= and so on. It would also be possible to abuse it for spam like this: domain.tld/page.html&L=1_buy-viagra-at_www.viagra-spam.url

You can avoid this cache-pollution by specifying a range of valid values for your linkVars configuration. You can append the values in round brackets to your L-params. It’s also possible to use regular expressions here.

Example:

config {
linkVars = L(1-5), print(1)
}

Otherwise it can happen that TYPO3 puts malformed URLs in your cache and your clients will get mad.
You can find more examples in TSref at typo3.org.


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