Benchmark	Mode	Cnt	Score	Error	Units
ParallelRequestBenchmarks.feignJava11	thrpt	15	91.653	± 26.654	ops/s
ParallelRequestBenchmarks.feignJava11H2c	thrpt	15	97.272	± 29.829	ops/s
ParallelRequestBenchmarks.feign	thrpt	15	57.341	± 36.267	ops/s
ParallelRequestBenchmarks.feignJetty	thrpt	15	71.343	± 26.456	ops/s
ParallelRequestBenchmarks.feignJettyH2c	thrpt	15	52.244	± 13.242	ops/s
ParallelRequestBenchmarks.feignWebClient	thrpt	15	47.264	± 10.962	ops/s
ParallelRequestBenchmarks.webClient	thrpt	15	66.315	± 13.116	ops/s

To run benchmarks on Windows increase the number of ephemeral ports

https://support.microsoft.com/en-ca/help/196271/when-you-try-to-connect-from-tcp-ports-greater-than-5000-you-receive-t

and to take effect also adjust the following parameters:

To tweak TCP timeouts we adjusted the following parameters:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters] "TcpTimedWaitDelay"=dword:00000028

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters] "StrictTimeWaitSeqCheck"=dword:00000001

While changing this parameter the following important points needs to be considered:

Changing these values requires a reboot. Plan to do that out of your production hours. TcpTimedWaitDelay is 2 minutes by default, even if the value is not present in the registry. You must set the StrictTimeWaitSeqCheck to 0x1 or the TcpTimedWaitDelay value will have no effect.