W.C.A. Wijngaards (wouter) writes:
>
> Yes I wrote the code and say so. (Not sure how that is better than
> reading the source). Results, anecdotally, are very modest. It does
> remove latency spikes for popular names.
What does the latency spike translate to in terms of extra traffic
(clients) ? A thundering herd effect ? Congestion ? Considering
how many tricks modern browsers have up their sleeves (including
prefetching data linked on a page), I'm wondering how the two
interact. I've always mentioned the expiring RR prefetch option
to be a cool feature of Unbound, but in reality, what does it mean
for users ?
> Aside, I agree that prefetching before the TTL expires is overly
> aggressive.
If it mitigates other issues...
> But lengthening the TTL is worse (for DNSSEC rollovers
> TTLs MUST expire, or the signatures become bogus).
:)
P.
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