RE: caching static objects
We are running Tomcat-standalone and are having some caching issues. It appears to be a browser issue, but there's got to be some workaround. We've got the headers set to pragma nocache, but it continues to cache objects, such as charts that are created dynamically. I suppose this wouldn't be an issue if the code worked with Apache. Also, creating unique identifiers for each object has been shot down. Does anyone know of a way to get server.xml to set each object not to cache? Thanks. The 'Pragma' header you use is from HTTP/1.0. Most caches, including browser cache, by now use HTTP/1.1, where cache control is achieved differently. You should use 'Cache-Control' headers (although it never hurts to also use 'Pragma' headers, in case you encounter an older HTTP/1.0 cache). For more information you can look at the HTTP/1.1 RFC at: ftp://ftp.isi.edu/in-notes/rfc2616.txt and search for the text 'Cache-Control'. Regards, Ronald. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: caching static objects
Howdy, We are running Tomcat-standalone and are having some caching issues. It appears to be a browser issue, but there's got to be some workaround. We've got the headers set to pragma nocache, but it continues to cache objects, such as charts that are created dynamically. I suppose this wouldn't be an issue if the code worked with Apache. Also, creating unique identifiers for each object has been shot down. Does anyone know of a way to get server.xml to set each object not to cache? Thanks. There's no server.xml way to do this, but it's a trivial filter to write. Just add the pragma-nocache and the cache-control headers to every outgoing response. Yoav Shapira This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: caching static objects
if you're using the jfreechart package for dynamic chart creation, then there's a setting in that package that you can adjust for whether or not the chart should be cached or not (and when it expires). -Original Message- From: Kimberly McKinnis [mailto:[EMAIL PROTECTED] Sent: Monday, March 22, 2004 4:42 PM To: [EMAIL PROTECTED] Subject: caching static objects We are running Tomcat-standalone and are having some caching issues. It appears to be a browser issue, but there's got to be some workaround. We've got the headers set to pragma nocache, but it continues to cache objects, such as charts that are created dynamically. I suppose this wouldn't be an issue if the code worked with Apache. Also, creating unique identifiers for each object has been shot down. Does anyone know of a way to get server.xml to set each object not to cache? Thanks. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: caching static objects
Mmm... good thought. Am using Chart FX though. I shall look in there. Thanks! -Original Message- From: Mike Curwen [mailto:[EMAIL PROTECTED] Sent: Monday, March 22, 2004 3:25 PM To: 'Tomcat Users List' Subject: RE: caching static objects if you're using the jfreechart package for dynamic chart creation, then there's a setting in that package that you can adjust for whether or not the chart should be cached or not (and when it expires). -Original Message- From: Kimberly McKinnis [mailto:[EMAIL PROTECTED] Sent: Monday, March 22, 2004 4:42 PM To: [EMAIL PROTECTED] Subject: caching static objects We are running Tomcat-standalone and are having some caching issues. It appears to be a browser issue, but there's got to be some workaround. We've got the headers set to pragma nocache, but it continues to cache objects, such as charts that are created dynamically. I suppose this wouldn't be an issue if the code worked with Apache. Also, creating unique identifiers for each object has been shot down. Does anyone know of a way to get server.xml to set each object not to cache? Thanks. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
