SEO, Keywords and Headers

Report · Feb 26, 2008

Does anyone have any information on If-Modified-Since HTTP Headers? I found a link to a page on Google which explains some Technical Webmaster Guidelines about how to let Google know when you have updated your site. It reads...

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.

Thanks for any help!

Report · Feb 27, 2008

rex1981 wrote:
> Does anyone have any information on If-Modified-Since HTTP Headers? I found a
> link to a page on Google which explains some Technical Webmaster Guidelines
> about how to let Google know when you have updated your site. It reads...
>
> 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.
>
> Thanks for any help!
>

What web server are you using?

Steve

Report · Feb 27, 2008

.oO(rex1981)

>Does anyone have any information on If-Modified-Since HTTP Headers?

Caching Tutorial for Web Authors and Webmasters
http://www.mnot.net/cache_docs/

Web servers should automatically recognize such headers for static files
(HTML, images, CSS ...), but using them in your own scripts and reacting
properly is not a trivial task.

>I found a
>link to a page on Google which explains some Technical Webmaster Guidelines
>about how to let Google know when you have updated your site. It reads...
>
> 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.

It's not only about Google. It can save bandwidth for every client.

Micha