'Expires' website speed boost

Posted by jgarzik on Dec 26, 2006 9:47 PM EDT
Jeff Garzik's linux pages; By Jeff Garzik
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The 'Expires' HTTP header can be a webmaster's secret weapon, potentially reducing bandwidth and increasing performance for content that changes infrequently. This article explains why 'Expires' is often better than 'Last-Modified' for caching.

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