HTTP Headers and SE's

what headers are safe and which ones should we steer away from

[daisho]

Hello,

I am looking at adding some HTTP headers to my dynamic program so that I can optimize a little for caching servers. My concern is that will google or other SE's view the headers and not cache them because of the headers.

I am looking at adding the "Expires" header and making it 1/2hour from the access time. Also

Cache-Control: maxage 1800, s-maxage 1800

I am conserned that SE's will see this and will not cache my pages because my expires time are so close.

Remeber I am NOT taking about HTML MetaTags but actual HTTP Protocol Headers.

Can anyone confirm or deny this.

Thanks,
DaiSho

[andreasfriedrich]

Cache control headers control the caching of your resources by proxies, browsers and other caching agents. SEs index your page. They do not cache it. You can control indexing with your robots.txt file or the robots meta tags.

Andreas

[daisho]

That's what I figure but I just want to make sure that SE's will see the page as "less indexable" because it expires.

[Orange_XL]

I use Expire-headers a lot, but never noticed any influence on SE's.