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Optimizing with a Ma= llet
Safari has a strange issue regarding its use of the Last-Modified cachin= g mechanism, requiring that the Date: header also be passed back in the Htt= pResponse or else safari will make subsequent requests checking if static c= ontent has altered. This can increase the load on the server dramatically = if you are running jetty in a mode that doesn't apply the Date: header. By= default jetty is configured to sendDateHeader() as set in the jetty.xml fi= le, but users that run in embedded mode need to programmatically set this h= eader.