Have any hinet or rules to prevent loading old webpage ??

[王紹宇]

Dear All:
Becase our company serve large squid cache system. Recently, they complaint
about when they update their web page(we also have free web hosting) or
other free web hosting site (geocities, tripod..) , their web page seems can
not update immediately. They have to wait two or three days later to see
their update web page.

We thought this problem is caused by our squid cache system. So
could someone plase give our some advise to prevent this annoying problem.
As I know , can we use
1. refresh_pattern to fix this problem? If we could use this , how to setup
this parameter to let our user can see their update page as soon as possible
?
Have any hints or rules to follow ?
2. Further, Have any methods to prevent loading old web page in client side?
Does IE and Netscape have any options to request newer page from proxy ?

Thanks

[Duane Wessels]

On Tue, 4 Jan 2000, [Big5] 王紹宇 wrote:

> 2. Further, Have any methods to prevent loading old web page in client side?
> Does IE and Netscape have any options to request newer page from proxy ?

The RELOAD button on the browsers should do this.

Make sure that you did NOT use one of the following options to
'refresh_pattern':

# options: overrsde-expire
# override-lastmod
# reload-into-ims
# ignore-reload

Duane W.

[王紹宇]

We also do some test , we found if we click reload button (IE and
Netscape) , all the web pages are old pages. After we hold shift + Reload
botton , the newer web page shows.
What the different between reload and shift+ reload ? Does brower
will make different request ?
We also sure we don't have those invalid http protocol parameter (
override last-mod .,etc)in our squid.conf.

Thanks very much for your information.

-----Original Message-----
From: Duane Wessels [mailto:wes...@ircache.net]
Sent: Tuesday, January 04, 2000 3:37 PM
To: 王紹宇
Cc: squid...@ircache.net
Subject: Re: Have any hinet or rules to prevent loading old webpage ??

[Henrik Nordstrom]

王紹宇 wrote:

> Becase our company serve large squid cache system. Recently, they
> complaint about when they update their web page(we also have free
> web hosting) or other free web hosting site (geocities, tripod..),
> their web page seems can not update immediately.

Sounds like you are running a "transparent" proxy and your users are
using Microsoft IE. The reload button in IE only tells "external" caches
to reload their content if the browser is configured to use a proxy
(else it assumes there is no cache in between itself and the origin
server).

The best "workaround" is to have the user configure their proxy
settings. It may also work if they upgrade IE to the latest&greatest
version which is said to support transparent proxies.

Using Netscape should also work fine (all versions).

--
Henrik Nordstrom
Squid hacker

[Henrik Nordstrom]

王紹宇 wrote:
>
> We also do some test , we found if we click reload button (IE and
> Netscape) , all the web pages are old pages. After we hold shift
> + Reload botton , the newer web page shows.

Sounds like there is a date problem somewhere. This should normally only
happen if you replace a file with a new file having a older modification
date.

Plain reload causes the browser (and Squid) to check if there is a newer
version of the object available. Shift+Reload causes it to download a
new copy irregardless if it is modified or not.