seeing latest updates
Are You Seeing Our Latest?
TRY CTRL-F5 REPEATEDLY AND PLEASE CHECK FROM YOUR HOME PC
OR OUTSIDE THE NHSNET BEFORE CONTACTING US IF THE CHANGES YOU
EXPECTED HAVE NOT APPEARED.
We update your Web pages usually on the same day and inform you
that this has been done. Most Web browsers use disk caching to
speed up your second access to files you have seen before. The
page is saved on your hard disk or in memory of a local machine.
When you request it a second time by selecting a link you have
used before, the file may come from the cache on your disk
rather than being downloaded slowly from the Internet. That
helps a lot with slow modem connections and heavy graphics
pages. We find people accessing pages from within the NHSnet
connection (on your practice machines) have more problems.
Ideally the browser checks to see if the page needs updating
before it serves you a stale page. But not always.
Clearing your cache:
https://kb.iu.edu/data/ahic.html
Internet Explorer,
http://www.microsoft.com/windows/ie/ie6/using/howto/customizing/clearcache.mspx
there is also a setting for options that defaults to the
equivalent of Never. We recommend setting that one to Once per
Visit.
Our pages have very lean graphics, and are designed to load
quickly even if you have a slow connection. Using Microsoft Explorer
try fooling your cache by "zeroing
out" the History option so that the browser does not keep a
history of where you have been for more than one day.
Firefox
http://www.mozilla.org/support/firefox/tips
Different Browser Solutions
In Netscape there is a preference reached through
Options-Network-Caching that lets you set an option for Verify
Documents to Once per Session, Every Time, or Never. If yours is
set to never, you are going to see stale pages frequently when
you revisit a site. We recommend you set that option to at least
Once per Session. On our own machines we set it to Every Time.
It may slow reloads, but to us it's worth the few second's wait.
In addition to your browser, some organizations (NHSnet!) or
Internet Service Providers also cache or save Web pages and
supply them to the next one of their users who tries to browse
them as a way of saving Internet bandwidth and making the page
load faster. The page is saved on a disk or in memory of a
machine within the organization. This permits many hits to be
served from one occasional download of the page by the
organization's server.
Sometimes we have updated pages and had browsers complain that
we have not. If your organization has a "proxy server" or
another server that caches files, or if you are with AOL or
another ISP who uses caching, you may well be seeing stale
pages. Fast, efficient, but possibly stale.
Other Tips and suggestions
On some systems with caching, cached pages can be updated just
by hitting your Reload or Refresh button. For Internet Explorer,
you may have to click on the button repeatedly. Ctrl-F5
can sometimes work as well as adding a question mark to the URL
in the address bar, for example if the page you are looking at
normally has the following address http://www.bbc.co.uk try
http://www.bbc.co.uk? .
Try accessing the webpage from a machine that has not previously
looked at that page.
On others you have to manually delete the disk and memory cache
by selecting that option and a delete button. On others you may
have to ask your system administrator how to update the cache.
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