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CONFIG proxy.config.http.cache.required_headers INT 1

This one specifies whether or not to allow clients to use HTTP "range" requests.

From Leif H: "Turning off proxy.config.http.cache.range.lookup (range requests) does not tell ATS that it can’t use Range: requests. It completely disabled Range: support for all clients. This is almost never what you want . Leave it on."

CONFIG proxy.config.http.cache.range.lookup INT 0

HTTP RAM Cache

While the default ATS options for this may be optimal under heavy load,
I found using the simpler LRU algorithm much faster and more useful.

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