Github user SolidWallOfCode commented on the pull request: https://github.com/apache/trafficserver/pull/44#issuecomment-39865474 It seems to me there are two effecrive changes for this. The first minor one is that the response can be set earlier in the method. The more concerning one is that whether the response is set at all for negative caching. If the info is valid on entry then it won't be, but if the entry isn't set then it will be. Presumably the difference is that the transform is never valid on entry. The big question is whether setting the response can be a problem.
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