Why does TOMCAT return cache page when file has been modified??

["Wise, Bowden (Research)" <wi...@crd.ge.com>]

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 
> <ma...@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 
> <ma...@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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