cache control in apache

[Avinash venna]

Hi every one,

I have integrated apache with tomcat and everything is working fine. But when i am downloading an image through apache i am getting an error like "unable to download the file" in IE. when i have added cache-control in my code its working fine if i access through tomcat but not working when i am trying to do with apache. Some one please guide me how to set cache -control headers in apache for specific file downloads.


Regards,
Avinash.

[Tim Holloway]

I ran across some references to that sort of behavior just yesterday. Apparently, IE erases the file from its temp directory before saving it unless caching is enabled.

Tomcat overrides (and disables) caching when SSL is in use by default for security reasons, but there's a Valve setting or 2 that can be used to remediate that (I don't have the references, so you'll have to Google for details on use). Since you mentioned Apache as well, that may make things more complicated, but I'm not sure. If you're using a Tomcat connector the no-cache headers may be coming from Tomcat, not Apache.