Having a local copy of the root zone using the auth-zone feature (or on a local NSD) might help a little.
On 2018-05-25 03:31 PM, Florian Lohoff via Unbound-users wrote: > > Hi, > > We are running multiple unbound caches behind very long latency > sat links. We are seeing RTT of at least 1000ms. > > Sometimes recursing times spike up to 20 Seconds. > > Is there an optimization guide on how to fine tune parameters > for those situations? > > I have already seen jostle-timeout. I am pretty shure prefetching > has a huge impact. > > Anything else? > > Flo >
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