I&#x27;m always puzzled when no one mentions Undertow in this sort of threads<p>I got my eye on it ever since it appeared in those Techempower benchmarks<p><a href="https:&#x2F;&#x2F;www.techempower.com&#x2F;benchmarks&#x2F;#section=data-r11&amp;hw=peak&amp;test=json" rel="nofollow">https:&#x2F;&#x2F;www.techempower.com&#x2F;benchmarks&#x2F;#section=data-r11&amp;hw=...</a><p><a href="http:&#x2F;&#x2F;undertow.io" rel="nofollow">http:&#x2F;&#x2F;undertow.io</a>