Regarding client support, why does only Google appear to be interested? Talking about saving a round trip here...
To try with NGINX, you may need to add compile it with --with-cc-opt="-DTCP_FASTOPEN=[X]" otherwise just adding fastopen=23 into your server block may be problematic.
https://www.ruby-forum.com/topic/5392464
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[ 3.0 ms ] story [ 14.7 ms ] threadTo try with NGINX, you may need to add compile it with --with-cc-opt="-DTCP_FASTOPEN=[X]" otherwise just adding fastopen=23 into your server block may be problematic. https://www.ruby-forum.com/topic/5392464