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Posted by Ben C on 08/09/07 20:13
On 2007-08-09, alice <alice@fearofdolls.com> wrote:
[...]
> This is what I'm wondering, but if it is an error in the code, that
> implies that there is a bit of code that could make text a different
> color the first time it is viewed in Firefox. So even though I don't
> have that code in front of me, can someone show me what kind of code -
> could- do this, if it is possible?
It's not possible, at least not unless you do it deliberately by writing
a cookie or tracking connections on the server. Neither are things you
could very feasibly do by accident.
There must be some other explanation.
If the second person saw black then red, but the first time they visited
the page was after it had been changed to red, then perhaps the black
version was not in the browser's cache but in the cache of a proxy
between the real server and the browser.
When you update a web-page, people can still connect (for the first
time) and get the old one for a little while. Publishing things on the
www is done by "pull" not "push". In other words, the new page isn't
pushed out to all the computers in the world, it just sits there and
they have to come and get it. A page can be marked with an expiry date
and a proxy should re-fetch any cached page anyone asks for which is
past its date. I'm not sure if the server puts some reasonable default
if you don't set it up, or if the page just goes out with no date and
proxies use their own defaults.
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