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submitted 5 days ago by [email protected] to c/[email protected]

Hey gang, I'm considering using DNS4EU in Canada. My ping to their servers is ~130ms. That's way longer than anything local which is on the order of 1-5ms. Apart from resolving uncached entries taking longer, is there any contraindication to using a DNS server with high latency?

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[-] [email protected] 3 points 5 days ago

So you're asking if there is any other way to work around physics and get a better response time to servers that are thousands of miles away?

No.

Sorry.

[-] [email protected] 9 points 5 days ago

Not asking for a workaround. Asking if I'm missing some problem with using a slow DNS server I might run into, other than the obvious one.

[-] [email protected] 11 points 5 days ago

The only task of a DNS server is (or should be) to tell you how to get to a resource you're looking for by name. So, the only thing that is going to be reallistically affected is your (initial) connection times. And – since this is c/selfhosted – if you are setting a decent DNS cache in your local network, that should be even less of an issue.

The only borderline scenario that I could see feasible, since this is c/selfhosted , is that some software you are setting up that requires nanosecond DNS resolution or somesuch sillyness is going to fail or report false errors. But why would you even do that?

[-] [email protected] 3 points 5 days ago

And that's not even letting on that literally ALL DNS queries work from cache unless you are specifically doing a live query.

None of your software is. It's asking your OS. Your OS is asking your resolver service. Your resolver service is asking your router. Your router is 5000% caching DNS queries.

this post was submitted on 09 Jun 2025
62 points (98.4% liked)

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