RethinkDNS Resolver That Deploys to CF Workers, Deno Deploy, Fastly, Fly.io

Re:RethinkDNS Resolver That Deploys to CF Workers, Deno Depl... by e12e on Monday May 05, 2025 @05:18PM (#43899553)

But as far as I understand - these tests are run on hosts with comparable distance/ping?

And 400ms ping is remarkably bad for a client that can otherwise do 20ms to a nearby server?

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Re:RethinkDNS Resolver That Deploys to CF Workers, Deno Depl... by ignoramous on Tuesday May 06, 2025 @03:49AM (#43902678)

godnsbench isn't testing pings but DoH / DoT (and DoH is expensive due to the TCP, TLS, and HTTP overhead [0]). OP did share a ping report (which paints a different picture): https://check-host.net/check-ping?host=https://sky.rethinkdn...

Sending one DNS query per HTTP connection (which is what the OP claims is "real world") is not how "real world" DoH clients are supposed to be written or work. So it is unlikely to be representative of "real world" delays.

In fact, in my tests, other public DNS resolvers don't fair any better with one query per connection, either.

[0] For example, a TLS handshake transfers 1.5KB to 4KB, while a typical DNS query is 30B to 70B & responses are 70B to 150B.

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