I think it is the Etisalat proxy that is caching the webpages and as the
cache gets re-freshed, you see the site.


On 8/23/07, penguinforce <[EMAIL PROTECTED]> wrote:
>
> I'm having a problem which is really testing my understanding of the
> Internet (my sanity as well).
>
> I have a PHP-based web site running on a remote server. When I edit a
> file on that server, and I try to load the file using HTTP from my
> browser, I don't see the changes I just made.
>
> I definitely cleared my browser cache, and to be double-sure it's not
> a browser issue, I've used lynx and wget.
>
> If I use another computer on my home network, through the same ADSL
> connection, again I _do not_ see the changes to the file.
>
> If I log in to a shell account on a computer outside the UAE, and try
> wget'ing that file before and after the modification, I _do_ see the
> changes.
>
> If I go shopping at Mercato Spinney's, come back 3 hours later and try
> it from my home PC again, I _do_ see the changes to the file.
>
> I noticed that if I cycle the power on my ADSL modem/router very
> quickly, I still _do not_ see the changes. Co-incidentally, my
> Internet-facing IP address granted by Etisalat remains the same during
> a quick reboot.
>
> If I leave my ADSL modem powered off for several minutes and then
> reboot it, Etisalat gives me a different IP address, and now I _do_
> see the changes to the file.
>
> So it feels like some computer between the web host and my home
> computer is caching those files, based on my IP address. But they
> don't get cached for the computer where I have a shell account.
>
> For the hell of it, I tried clearing a cache table that my website
> scripts use occasionally to speed things up - that made no difference.
> This problem affects only static files that get served up from the
> webhost. I don't have a problem with any dynamic content that gets
> generated by the site's scripts (even random numbers on a single page
> that change on every page reload).
>
> I'm sorry if my rambling has obscured the issue. Does anybody have
> any ideas what's going on?
>
> 
>

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