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by jedberg 2327 days ago
I don't think so. DoH deals more with streamlining the transmission of requests and responses, but I don't recall any part of the RFC dealing with TTLs.

You'll still be talking to your local DNS server with its own caching rules.
1 comments
yjftsjthsd-h 2327 days ago
I thought part of the big deal with DoH was precisely that you don't use your local DNS server (or more importantly, your ISP's DNS server). If DoH effectively means that more people pull DNS straight from Cloudflare, then I would expect the TTL situation to improve.
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jedberg 2327 days ago
Right now Cloudflare is the main provider, but it's an open standard. Anyone would be able to provide the service.

Chrome for example will only use it against your ISPs DNS servers, otherwise it will use Google's servers. So that would at least help, but if the big ISPs start supporting it, then Chrome would use that.

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