• http://www.pagerank-seo.com Robert Visser

    Great article. Very helpful for web masters and small businesses that are hosted on Apache and have access to the mod_cache module. While obviously beyond the scope of this article, given the high percentage of those who don’t have access, it would be helpful to have an article on how to implement cache control via .htaccess files.

    FYI: On the World Wide Web (W3C) Mobile OK validator, http://validator.w3.org/mobile/ cache control is required to validate. If a url doesn’t have cache control implemented, a link to Mark Nottingham’s Caching Tutorial for Web Authors and Webmasters, http://goo.gl/J2DV9 , is provided.

  • http://www.michael-martinez.com/ Michael Martinez

    And how does this impact passive analytics?

  • Ashish

    Another great article Todd.

    I haven’t used traffic server so don’t know how effective it is, but recently started using nginx for caching static files. It improved site performance but also reduced server load alot. It is one of the best caching server in my experience so far. There are few other good ones – G-Wan, Varnish, Lighthttpd.

  • Amanda Shearer

    Great article, very helpful. I was just reading over this one too, which I found very interesting because it is basically a review of what to watch out for when implementing expires caching for SEO: http://www.seomoz.org/ugc/expires-headers-for-seo-why-you-should-think-twice-before-using-them