On Tue, May 2, 2006 3:24 pm, Brian Akins said: >> - the cache says "cool, will send my copy upstream. Oops, where has my >> data gone?".
> So, the cache says, okay must get content the old fashioned way (proxy, > filesystem, magic fairies, etc.). > > Where's the issue? To rephrase it, a whole lot of extra code, which has to be written and debugged, has to say "oops, ok sorry backend about the If-None-Match, I thought I had it cached but I actually didn't, please can I have the full file?". Then the backend gives you a response with different headers to those you already delivered to the frontend. Oops. Keeping the code as simple as possible will keep your code bug free, which means less time debugging for you, and less time for end users trying to figure out what the cause is of their weird symptoms. Regards, Graham --
