|Do proxied assets get cached?||#1|
I have an application and in order to get the images to load into the app I had to use a proxy. So the urls for the images are not .jpg they are .php?var=value They seem to load much slower even after they have already loaded once, I don(t really know how it works, but I am thinking that the proxied images are not being cached. Am I correct?
posted date: 2009-04-15 09:21:00
|Re: Do proxied assets get cached?||#3|
Your PHP-file might have declared a no-cache flag, or a low expiry time. Try opening both urls in a viewer which shows the full http headers.Every proxy has its own settings how to deal with caching and different file types. A JPG is often seen as a static file, so it(s safe to cache it. PHP files however are seen as dynamic scripts, who produce a different output every time. But this completely depends on your proxy(s configuration.
posted date: 2009-04-15 09:28:00
|Re: Do proxied assets get cached?||#4|
Well the proxy accepts parameters for mime-type and headers, I have the mime-type set to "image/jpeg" but I don't know what to put for the headers so I didn't set them. Do you know what I should put for the headers? Thanks.
posted date: 2009-04-15 10:12:00
|Re: Do proxied assets get cached?||#5|
Nevermind after studing the script it looks like it is just checking to see if the parameter headers == "true". So I guess I should set that?
posted date: 2009-04-15 10:21:00
|Re: Do proxied assets get cached?||#6|
IE (and maybe other browsers) doesn(t cache URLs with any kind of ?query=string&foo=bar if there are no caching headers in the response. You have to explicitly set the Cache-Control and Expires headers for these to be cached.In PHP, the way to set headers is this:
// can be cached by browser, and also by intermediate caches (i.e. by everybody)header((Cache-Control: public();// is fresh (doesn(t have to be re-checked) until that dateheader((Expires: Fri, 17 Apr 2009 23:50:00 GMT();
Caveat: you need to send headers before content, unless you use output buffering.
posted date: 2009-04-15 11:28:00
|Re: Do proxied assets get cached?||#7|
Can you please tell me or point me to a place that explains how to set that? Thanks.
posted date: 2009-04-15 11:34:00
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