h2o is also one of the few servers to get resource prioritization correct for HTTP/2 and HTTP/3.

If resource prioritisation is new, a few references: https://www.youtube.com/watch?v=MV034VqHv5Q https://calendar.perfplanet.com/2022/http-3-prioritization-d... https://github.com/andydavies/http2-prioritization-issues