Github user jpeach commented on the pull request: https://github.com/apache/trafficserver/pull/280#issuecomment-134649058 This branch needs to be cleaned up before it can be merged. Please rebase the patches so that there is: - a patch that adds CacheProcessor::cacheRequired() with no other change of behavior - other no-op patches that don't change behaviour - a single patch that implements the desires behavior. You need to add comments. Commit comments explaining what each patch in doing and why. Code comments. Please run ```clang-format``` on the patches. Squash and remove patches that fix bugs in earlier patches. Follow existing coding style (eg. we don't use Hungarian notation). The documentation of ```proxy.config.http.cache.required``` seems inaccurate. The 0 value conflicts with ```wait_for_cache```, so you should explain how that interacts. Is there any code here that actually stops serving if we lose a disk?
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