ETag & Last-modified headers in dymanic pages
Posted: Sun Mar 09, 2008 6:14 am
All my site's pages are parsed by PHP. This means that none of these headers are generated by default.
My pages have currency amounts which do not necessarily change every day. Currency rates change every day but my currency amounts may not change every day.
Example:
2500 yens = 24.35USD @ 102.69 yens/usd (My site would show $24 because I round the result)
2500 yens = 24.26USD @ 103.05 yens/usd (My site would show $24 because I round the result)
So this means that my site's dollars would only change when there is at least a $1 change in exchange rate.
Is there any way to make ETags and Last-modified tags ? Are they really necessary for SEO positioning?
My pages have currency amounts which do not necessarily change every day. Currency rates change every day but my currency amounts may not change every day.
Example:
2500 yens = 24.35USD @ 102.69 yens/usd (My site would show $24 because I round the result)
2500 yens = 24.26USD @ 103.05 yens/usd (My site would show $24 because I round the result)
So this means that my site's dollars would only change when there is at least a $1 change in exchange rate.
Is there any way to make ETags and Last-modified tags ? Are they really necessary for SEO positioning?