ansaurus

Question

Google Chrome Frame (GCF) problem in IE8 with cache

Answer 1

A:

An old CGI trick would have been to encode the date as a parameter onto the request so the URL changes with each request. That generally stops any caching on the URL.

So you'd have url?01102010134532 if you encoded date and time down to miliseconds.

If I understand your requirement properly, you'd have to do this in JQuery / JS and would need to modify the parameter on the URL after each AJAX request was made, so the next one would be different to the previous

Paul Hadfield 2010-10-01 13:47:09

I know that trick, you also need to do that in action script (flash) when you do AJAX requests. I know that will work for the Ajax request (like using the tick time), but if my JS file calling my service is updated it won't actually update, because it will still be in cache.

Nordes 2010-10-01 13:55:03

The operations should be in memory, so the cache shouldn't come into it. Consider if you had a function mapped to a click event and each time you clicked it added one to the counter and displayed it. If what you are saying is true, the alert would also contain the same value (never increased) as it was always taken from cache. I've never seen that happen before in any situation.

Paul Hadfield 2010-10-01 14:11:22

You were right about the cache in AJAX (jquery)... I had to put $(document).ready(function() { $.ajaxSetup({ cache: false }); }); just to make sure that the cache by default was disabled. But it's weird that it was working in all browsers except [IE + GCF]. Anyway, thank you.

Nordes 2010-10-04 13:06:40

Answer 2

A:

This doesn't sound like a browser-specific caching problem at all. Are you setting any of the HTTP headers for your content? I'm guessing not.

http://developer.yahoo.com/performance/rules.html#expires

http://developer.yahoo.com/performance/rules.html#etags

Matt Ball 2010-10-01 13:54:15

Yes, I tried, but it seems that Google Chrome Frame override these meta.

Nordes 2010-10-01 14:00:10

@Nordes: you can use the dev tools to look at the HTTP headers (since GCF _is_ Chrome). Are the headers that the browser receives the same as what you send? Additionally, are you _only_ setting HTTP headers using `<meta/>` tags? Because it sounds like you're not necessarily setting headers on your JSON responses.

Matt Ball 2010-10-01 14:42:12

@Nordes: the "Audits" tag in the Developer Tools window is your friend here.

Matt Ball 2010-10-01 14:43:43

ansaurus

tags:

views:

answers:

Google Chrome Frame (GCF) problem in IE8 with cache

related questions