Support » Plugin: W3 Total Cache » Saving bandwidth with "If modified since"

  • Resolved niska


    My site gets a lot of hits from googlebot. I’m using W3 Total Cache and was wondering if there is support for the “If modified since” header.

    Google say “Make sure your web server supports the If-Modified-Since HTTP header. This feature allows your web server to tell Google whether your content has changed since we last crawled your site. Supporting this feature saves you bandwidth and overhead.”

    Is this something I can use to save bandwidth?

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  • I’m also wondering if WP Super Cache can handle this header. Does anyone know?

    Supercache supports 304 browser caching and yes, it will help somewhat but probably not by much unless you leave the pages cached for a long time (more than a few days probably). Once the cache for a page is recreated the “key” used by 304 browser caching changes and the bot will have to download the page again.

    I wouldn’t rely on it to save lots of bandwidth but it will probably make reloading the same page for your users faster.

    Plugin Author Frederick Townes


    W3TC also returns this header.

Viewing 3 replies - 1 through 3 (of 3 total)
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