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From "Mike Jackson" <mjack...@cdi-hq.com>
Subject RE: Let me try this again: tomcat returns cached file rather than updated file
Date Fri, 23 Aug 2002 18:10:49 GMT
Check your browser settings, make sure it's set to check the cache on
every page access.  It's probably the browser that's the problem.

--mikej
-=-----
mike jackson
mjackson@cdi-hq.com

> -----Original Message-----
> From: Wise, Bowden (Research) [mailto:wisegb@crd.ge.com]
> Sent: Friday, August 23, 2002 10:54 AM
> To: 'Tomcat Users List'
> Subject: Let me try this again: tomcat returns cached file rather than
> updated file
>
>
> Hi
>
> Sorry for the multiple postings about this, but I am
> baffled, and am surprised at the behavior...
>
> When using a java.net.URL to download a file on a
> tomcat webapp, i am finding that I get the OLD content
> rather than the new content
>
> I wrote a simple java test program:
> - write "first" to the file (FileWriter)
> - read the file (URL), verify "first" is read
> - write "second" to the file (FileWriter)
> - read the file (URL), should be "second" but gets "first"
>
> If I insert a pause (sleep call) before the second
> write, the second read does correctly obtain "second"
>
> I also tested on an Apache accesible directory and
> the problem does not appear, the second read correctly
> returns "second" immediately
>
> Does the tomcat cache mechanism not work when there is
> not sufficient elapsed times between file updates?
>
> I can't believe noone has noticed this
>
> Or is there something wrong with my configuration?
>
> Thanks
> Bowden
>
>
>
> >-----Original Message-----
> >From: Wise, Bowden (Research)
> >Sent: Friday, August 23, 2002 7:40 AM
> >To: 'Tomcat Users List'
> >Subject: Why does TOMCAT return cache page when file has been
> >modified??
> >
> >
> >Hi
> >
> >Please review my original message below and let me know
> >if you have seen this or know why it is happening
> >
> >thanks
> >Bowden
> >
> >>-----Original Message-----
> >>From: Wise, Bowden (Research)
> >>Sent: Thursday, August 22, 2002 5:13 PM
> >>To: 'tomcat-user@jakarta.apache.org'
> >>Subject: Tomcat Retrieves old cached file after file update
> >>
> >>
> >>Hi
> >>
> >>I am finding that Tomca4.0.3 is returning old cached content
> >>even after the underlying file has been modified.
> >>
> >>I have a servlet and JSP that work together, the servlet modifies
> >>a file in a web accessible directory (via FileWriter) and then
> >>redirects to the JSP which uses a URL to read the content
> >>of the file and display it.
> >>
> >>Once redirected, even though the file changed, the data displayed
> >>is the old content.
> >>
> >>I wrote a simple program to test this further:
> >>  write to the file
> >>  read content
> >>  write new content
> >>  second read of content
> >>
> >>the second read always returns the first content when tested
> >>under Tomcat but when testing on an Apache web server
> >>this problem does not happen as the new content is always
> >>returned.
> >>
> >>if I pause for 5 seconds between the first read and the
> >>write of the new content, the latst data is obtained by
> >>the second read...
> >>
> >>however, a pause of 1 second still reveals the old content
> >>
> >>Does the tomcat cache mechanism need a few seconds
> >>before it realizes that a file has changed??
> >>
> >>Bowden
> >>g GE Global Research Center
> >>___________________________
> >>G. Bowden Wise
> >> <mailto:wisegb@research.ge.com> wisegb@research.ge.com
> >>Information and Decision Technologies
> >>GE Global Research Center
> >>Building K1, Room 5B2C
> >>PO Box 8                            | One Research Circle
> >>Schenectady, NY 12301       | Niskayuna NY 12309
> >>Phone: 518-387-7833           | Fax: 518-387-6104
> >>
> >>
> >>
> >>Bowden
> >>g GE Global Research Center
> >>___________________________
> >>G. Bowden Wise
> >> <mailto:wisegb@research.ge.com> wisegb@research.ge.com
> >>Information and Decision Technologies
> >>GE Global Research Center
> >>Building K1, Room 5B2C
> >>PO Box 8                            | One Research Circle
> >>Schenectady, NY 12301       | Niskayuna NY 12309
> >>Phone: 518-387-7833           | Fax: 518-387-6104
> >>
> >>
> >>
> >
> >--
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> >For
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> >
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