At Thu, 7 Nov 2013 06:53:28 +0100, Daniel Migault <mglt.i...@gmail.com> wrote:
> Thanks for the complete answer. As you mention, this benefits not only the > end users but also authoritative and resolving servers (especially with > DNSSEC). It's already noted in this thread, but: I'd note that's a benefit only if the resolving server doesn't unify the same query from multiple clients while it resolves it. For those implementations (like ISC BIND 9) that do this unification, prefetching would only increase (although maybe marginally) external query/responses and only increase the authoritative server's load. So, this is not an inherent benefit of prefetch itself, but one for a particular type of implementation. I'm not saying this to insist prefetch is a bad idea, though. Reducing worst-case latency for end clients, (again, perhaps marginally) is an inherent benefit of prefetching for all types of resolver implementations, for example. I just wanted to clarify one minor detail. -- JINMEI, Tatuya _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
