Oops, that was a sales ticket, did it again and gave 789... Ayen Designs - quality software the first time, every time! -----Original Message----- From: Blake Senftner <bsenftner@earthlink.net> Sender: development-bounces@drupal.org Date: Thu, 9 Dec 2010 14:17:33 To: <development@drupal.org> Reply-To: development@drupal.org Subject: Re: [development] preventing browser cache Thanks for the tip Mike. These are files on disk. Sincerely, -Blake bsenftner@earthlink.net www.BlakeSenftner.com www.MissingUbercartManual.com On Dec 9, 2010, at 1:09 PM, Michael Prasuhn wrote:
That is only needed with actual files on disk, if your XML is returned from a Drupal menu callback, it's cache-expire headers should be set far in the past to prevent caching. Check this out with curl -v to see what's going on.
-Mike __________________ Michael Prasuhn 503.512.0822 office mike@mikeyp.net http://mikeyp.net
On Dec 9, 2010, at 1:05 PM, Blake Senftner wrote:
I'm finding that I need to implement a browser cache prevention scheme for dynamic content I am generating.
My use case: user supplied info gets converted into XML and loaded by a java applet on the same page.
I'm seeing the java applet load cached versions of the data, and I want to prevent this.
I don't have the ability to modify the java applet, and it always loads it's XML from the same filename.
I'm thinking about using the same technique that I see Drupal use for javascript files, where the src attribute's file url has a fake query string at the end, something like "/misc/drupal.js?5" , where the "?5" is the fake query string.
It's my understanding that this prevents browser caching, and ultimately does not trigger a query - so it's a great method for cache prevention of dynamic content.
Is my understanding correct? I've not done this before. Is it simply a matter of placing a single random character after the question mark? To anyone that has implemented a scheme such as this: any pitfalls I should be aware?
Sincerely, -Blake bsenftner@earthlink.net www.BlakeSenftner.com www.MissingUbercartManual.com