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I am setting-up a REST web service that just need to answer YES or NO, as fast as possible. Designing a HEAD service seems the best way to do it but I would like to know if I will really gain some time versus doing a GET request. I suppose I gain the body stream not to be open/closed on my server (about 1 millisecond?). Since the amount of bytes to return is very low, do I gain any time in transport, in IP packet number? Edit: To explain further the context: I have a set of REST services executing some processes, if they are in an active state. I have another REST service indicating the state of all these first services. Since that last service will be called very often by a very large set of clients (one call expected every 5ms), I was wondering if using a HEAD method can be a valuable optimization? About 250 chars are returned in the response body. HEAD method at least gain the transport of these 250 chars, but what is that impact? I tried to benchmark the difference between the two methods (HEAD vs GET), running 1000 times the calls, but see no gain at all (< 1ms)...

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