An annoying thing with CORS is that one cannot allow all paths for an origin. I.e. there will be pre-flight requests for every new path that requests are made t

An annoying thing with CORS is that one cannot allow all paths for an origin. I.e. there will be pre-flight requests for every new path that requests are made to in a REST API, making the response caching useless. Apparently to work around some bug in Microsoft ISS server. But this has also greatly increased the performance hit from CORS under some common usage scenarios, which is sad. http://lists.w3.org/Archives/Public/public-appformats/2008May/0039.html http://lists.w3.org/Archives/Public/public-appformats/2008Ma...