3 messages in com.googlegroups.google-desktop-developerRe: Caching XMLHTTPRequests
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matt...@gmail.com22 May 2007 10:10 
asasson25 May 2007 04:01 
grantwparks26 May 2007 07:58 
Subject:Re: Caching XMLHTTPRequests
From:grantwparks (gran@gmail.com)
Date:05/26/2007 07:58:53 AM
List:com.googlegroups.google-desktop-developer

This works for me - and I'm updating once a minute:

XmlHttpObjInstance.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );

On May 25, 5:01 am, asasson <sass@gmail.com> wrote:

I have a similar problem. how can I have the gadget refresh the cache hourly?

I have an art of the day gadget and I don't know if the art changes every day or not on the users machines...

any help would be appreciated! thanks, amitai

On May 22, 8:10 pm, "matt@gmail.com" <matt@gmail.com> wrote:

It appears as though Google Desktop is caching my XMLHttpRequest objects even if they are updated on the host server. I've tried appending a unique qualifier to the URL:

var d = new Date().getTime(); logoRequest_ = new XMLHttpRequest(); RSS_URL = "http://164.121.114.76/SC.xml?ms=" + d; logoRequest_.open("GET", RSS_URL, true);

But as soon as I introduce the "?" to the URL, my objects are no longer updated with content. (No exceptions thrown however). I've also tried setting the following headers:

logoRequest_.setRequestHeader("Cache-Control", "no-cache"); logoRequest_.setRequestHeader("Pragma", "no-cache"); logoRequest_.send();

Which also does not update the content. I thought initially this was due to not destroying the request object, but I've tried all sorts of solutions there as well. Any thoughts?

Thanks! Matt