Abhijit Menon-Sen <ams@xxxxxxxxxx> writes: > At 2008-07-11 16:07:26 +0200, lewiemann@xxxxxxxxx wrote: > > > > > 'If-Not-Modified-Since', 'If-Match' (by caches) > > > > Wait, are you sure caches would use those headers (I believe only the > > latter actually exists BTW), or did you fall prey to a thinko? ;) > > If-Not-Modified-Since should really be If-Unmodified-Since. > > But where's the thinko? To send If-Modified-Since or similar with a > request, you would need to have a cached copy of the resource and use > its Last-Modified, for example. Sure, you could do it without one, but > what would be the point? Actually the thinko was use of If-Unmodified-Since: and If-Match:. Both If-Unmodified-Since and If-Match can be used and should be used when requesting *partial document transfers* (when you need to ensure that document is unchanged before you fetch next part of it). Additionally If-Match can be used for concurrenty control when you do a two-way communication using GET and PUT, in a PUT request to ensure that you are modifying correct document. They are not used, I think, by caches to refresh cached data. -- Jakub Narebski Poland ShadeHawk on #git -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
