[Zope] Random Images: How to defeat the cache

[Mark Gibson]

Edward Pollard wrote:
> 
> On Apr 28, 2004, at 12:22 PM, Small Business Services wrote:
> 
>>
>> Try adding setting the expiry time:
>>
>> <meta http-equiv="expires" content="Sat, 01 Jan 2001 00:00:00 GMT">
>>
> 
> Of course, I'm dealing with images, not HTML content, so META tags are 
> right out.
> 
> But I added this as a header (using the same mechanism as the previous 
> example) with no luck.

I've had some luck with this combination:

     RESPONSE.setHeader('Expires', 'Fri, 05 Jul 2002, 05:00:00 GMT' );
     RESPONSE.setHeader('Cache-Control', 'no-store');
     RESPONSE.setHeader('Pragma', 'no-cache');

I think the only difference from what you've tried is setting 
'Cache-Control' to 'no-store' instead of 'no-cache'.

Mark

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