Sometimes you just don't want a page to be cached, ever, by the client's web browser. This recipe tells you how to do that from DTML.
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From DTML: <dtml-call "RESPONSE.setHeader('Cache-Control', 'no-cache')"> <dtml-call "RESPONSE.setHeader('Pragma', 'no-cache')"> From python/python script: def noCache(self, REQUEST): REQUEST.RESPONSE.setHeader('Cache-Control', 'no-cache') REQUEST.RESPONSE.setHeader('Pragma', 'no-cache')
There are two things done here. The first is to set the "Cache-Control" header. This works on newer browsers. The second is to set the Pragma header. Older browsers use this one. A newer browser will ignore Pragma if Cache-Control is defined.