Re: A wish for a Mathopd feature

>I have made a new beta with a "ExtraHeaders" keyword so that you can 
>insert your own "Expires:"  header. (The extra headers must be static, so 
>it is probably more useful to send a Cache-Control rather than an Expires 
>header.)
>
>If anyone could try out whether sending expires (or cache-control) headers 
>actually reduces network traffic, please let me know. I do not have the 
>means to test this out at the moment.

I don't have any direct experience with Mathopd yet, but I can state with 
authority that when I started deliberately post-dating the expiration of my 
active site's <http://grc.com> static images, our incoming bandwidth 
utilization dropped to 1/3rd of what it had been.  There was a 
corresponding, though much smaller, reduction in outgoing bandwidth, and 
our server's average connection count dropped significantly as well.

Looking at our logs, a few browsers appear to ignore the post-dated 
resource expirations, but the huge majority obey it and they completely 
stop issuing conditional "If-Modified-Since" GET requests.  For sites like 
mine with graphical navigation toolbars on every page this can make a huge 
difference.

Thanks for the new "ExtraHeaders" keyword Michiel!


______________________________________________________________________
Steve.