Cheers i did do much older HTTP/2 benchmarks with h2load HTTP/2 load tester way back too at https://community.centminmod.com/threads/caddy-http-2-server-benchmarks.5170/ and again Nginx won with 3x times performance while Caddy used 2.6x times more cpu and 2.3x times more memory h2load HTTP/2 tests.
Will revisit them with caddy 0.10.6 and http.cache too as well as caddy scaling with more http headers added Any performance overhead as you add more headers under HTTP/2?