Re: Problem with cache clearing in Tomcat
You may also want to try META http-equiv=Expires content=0 However, I don't really trust META tags. Browser implementations of META tags are not always reliable. Write to the response headers directly. I embed the following at the top of every jsp page. % response.setHeader(Cache-Control, no-cache); response.setHeader(Pragma, no-cache); response.setDateHeader(Expires, 0); % If you're not using jsp, you could also put this in your servlet code. However, during the development of my latest web app, I had similar cache problems while running under Tomcat 3.2.3 standalone. In my production environment however, I run Apache 1.3.23 with mod_jk to connect to Tomcat 4.0.3 and my cache problems went away. I'm not sure if it's a Tomcat version issue or if Tomcat's standalone HTTP connector just doesn't handle the headers correctly. Good luck, Jeff - Original Message - From: somya_iyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, March 26, 2002 3:58 AM Subject: Problem with cache clearing in Tomcat Hi, I'm using apache tomcat 4.0 and my application has been developed using only servlets and an oracle database. After a user logs out, when the next one logs in, the application continues with the old pages belonging to the previous user. The old session has been invalidated and the new session values are being correctly taken by the system. On refreshing the screen, the correct pages come up. I have tried setting the header information as follows: meta http-equiv=pragma content=no-cache meta http-equiv=cache-control content=no-store but this doesn't help either. Can anyone help out? Thanks, Somya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: Problem with cache clearing in Tomcat
To first check whether it's a browser or Tomcat server problem, go to another computer on your nework that has not yet been used to view the offending JSP/servlet. If you find you're still viewing an older version of the page, then it's obviously caching on the server. I've found that 9 times out of 10 it's Tomcat caching and not browser caching. If it's Tomcat caching then the META tags or pragma-no-cache will not help. There's the reloadable=false (or should it be true? I have to check) parameter for the context in server.xml. But even that has not helped for me and I have to just delete the /work directory whenever I want to reload things. Be careful not to delete something in the webapps directory by mistake. That can really ruin your day. Soefara. From: Jeff Larsen [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Subject: Re: Problem with cache clearing in Tomcat Date: Tue, 26 Mar 2002 09:29:48 -0600 You may also want to try META http-equiv=Expires content=0 However, I don't really trust META tags. Browser implementations of META tags are not always reliable. Write to the response headers directly. I embed the following at the top of every jsp page. % response.setHeader(Cache-Control, no-cache); response.setHeader(Pragma, no-cache); response.setDateHeader(Expires, 0); % If you're not using jsp, you could also put this in your servlet code. However, during the development of my latest web app, I had similar cache problems while running under Tomcat 3.2.3 standalone. In my production environment however, I run Apache 1.3.23 with mod_jk to connect to Tomcat 4.0.3 and my cache problems went away. I'm not sure if it's a Tomcat version issue or if Tomcat's standalone HTTP connector just doesn't handle the headers correctly. Good luck, Jeff - Original Message - From: somya_iyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, March 26, 2002 3:58 AM Subject: Problem with cache clearing in Tomcat Hi, I'm using apache tomcat 4.0 and my application has been developed using only servlets and an oracle database. After a user logs out, when the next one logs in, the application continues with the old pages belonging to the previous user. The old session has been invalidated and the new session values are being correctly taken by the system. On refreshing the screen, the correct pages come up. I have tried setting the header information as follows: meta http-equiv=pragma content=no-cache meta http-equiv=cache-control content=no-store but this doesn't help either. Can anyone help out? Thanks, Somya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] _ Chat with friends online, try MSN Messenger: http://messenger.msn.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: Problem with cache clearing in Tomcat
I found this issue seemed to have gone away for me, when I tried newest 4.1 and JMX enabled Hope this helps todd http://www.wiserlabz.com collaborative effort to promote Novell and Open Source solutions Soefara Redzuan wrote: To first check whether it's a browser or Tomcat server problem, go to another computer on your nework that has not yet been used to view the offending JSP/servlet. If you find you're still viewing an older version of the page, then it's obviously caching on the server. I've found that 9 times out of 10 it's Tomcat caching and not browser caching. If it's Tomcat caching then the META tags or pragma-no-cache will not help. There's the reloadable=false (or should it be true? I have to check) parameter for the context in server.xml. But even that has not helped for me and I have to just delete the /work directory whenever I want to reload things. Be careful not to delete something in the webapps directory by mistake. That can really ruin your day. Soefara. From: Jeff Larsen [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Subject: Re: Problem with cache clearing in Tomcat Date: Tue, 26 Mar 2002 09:29:48 -0600 You may also want to try META http-equiv=Expires content=0 However, I don't really trust META tags. Browser implementations of META tags are not always reliable. Write to the response headers directly. I embed the following at the top of every jsp page. % response.setHeader(Cache-Control, no-cache); response.setHeader(Pragma, no-cache); response.setDateHeader(Expires, 0); % If you're not using jsp, you could also put this in your servlet code. However, during the development of my latest web app, I had similar cache problems while running under Tomcat 3.2.3 standalone. In my production environment however, I run Apache 1.3.23 with mod_jk to connect to Tomcat 4.0.3 and my cache problems went away. I'm not sure if it's a Tomcat version issue or if Tomcat's standalone HTTP connector just doesn't handle the headers correctly. Good luck, Jeff - Original Message - From: somya_iyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, March 26, 2002 3:58 AM Subject: Problem with cache clearing in Tomcat Hi, I'm using apache tomcat 4.0 and my application has been developed using only servlets and an oracle database. After a user logs out, when the next one logs in, the application continues with the old pages belonging to the previous user. The old session has been invalidated and the new session values are being correctly taken by the system. On refreshing the screen, the correct pages come up. I have tried setting the header information as follows: meta http-equiv=pragma content=no-cache meta http-equiv=cache-control content=no-store but this doesn't help either. Can anyone help out? Thanks, Somya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] _ Chat with friends online, try MSN Messenger: http://messenger.msn.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: Problem with cache
matteo belloni wrote: I've a servlet that write on a file. If the Tomcat is running the first time the application rewrite the file, the other time this file is appended but, If I first shutdown the webserver, the information in a file isn't appended and the application function correctly. This appen because this file is keeping in the web server's cache. How can I solve this problem and writing every time on a file instead of append the information? I must modify web.xml? And how? Please help me. Thanks in advance Sounds to me like you are not flushing and/or closing the file. -- WBB - [EMAIL PROTECTED] Java Cert mock exams http://www.lanw.com/java/javacert/ Author of Java Developer's Guide to Servlets and JSP ISBN 0-7821-2809-2 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Re: Problem with cache
No I close it and after rewriting I deleted it and this file appear really deleted but Tomcat mantain it in cache so my deletion is inutil. Thanks Theo - Original Message - From: "William Brogden" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, March 01, 2001 1:52 PM Subject: Re: Problem with cache matteo belloni wrote: I've a servlet that write on a file. If the Tomcat is running the first time the application rewrite the file, the other time this file is appended but, If I first shutdown the webserver, the information in a file isn't appended and the application function correctly. This appen because this file is keeping in the web server's cache. How can I solve this problem and writing every time on a file instead of append the information? I must modify web.xml? And how? Please help me. Thanks in advance Sounds to me like you are not flushing and/or closing the file. -- WBB - [EMAIL PROTECTED] Java Cert mock exams http://www.lanw.com/java/javacert/ Author of Java Developer's Guide to Servlets and JSP ISBN 0-7821-2809-2 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Re: Problem with cache
Tomcat does not cache files as such. Your problem must come from a different source. matteo belloni wrote: No I close it and after rewriting I deleted it and this file appear really deleted but Tomcat mantain it in cache so my deletion is inutil. Thanks Theo - Original Message - From: "William Brogden" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, March 01, 2001 1:52 PM Subject: Re: Problem with cache matteo belloni wrote: I've a servlet that write on a file. If the Tomcat is running the first time the application rewrite the file, the other time this file is appended but, If I first shutdown the webserver, the information in a file isn't appended and the application function correctly. This appen because this file is keeping in the web server's cache. How can I solve this problem and writing every time on a file instead of append the information? I must modify web.xml? And how? Please help me. Thanks in advance Sounds to me like you are not flushing and/or closing the file. -- WBB - [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
Re: Problem with cache
Thanks Theo - Original Message - From: "William Brogden" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, March 01, 2001 3:34 PM Subject: Re: Problem with cache Tomcat does not cache files as such. Your problem must come from a different source. matteo belloni wrote: No I close it and after rewriting I deleted it and this file appear really deleted but Tomcat mantain it in cache so my deletion is inutil. Thanks Theo - Original Message - From: "William Brogden" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, March 01, 2001 1:52 PM Subject: Re: Problem with cache matteo belloni wrote: I've a servlet that write on a file. If the Tomcat is running the first time the application rewrite the file, the other time this file is appended but, If I first shutdown the webserver, the information in a file isn't appended and the application function correctly. This appen because this file is keeping in the web server's cache. How can I solve this problem and writing every time on a file instead of append the information? I must modify web.xml? And how? Please help me. Thanks in advance Sounds to me like you are not flushing and/or closing the file. -- WBB - [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
