Persistent cache

Jim Reid jim at
Wed Oct 30 09:13:43 UTC 2002

>>>>> "William" == William Stacey <staceyw at> writes:

    William> Is there any advantage to a persistent cache in BIND?

No. When a conventional server starts, it builds up a cache fairly
quickly. Loading old, possibly stale, data seems an exercise in
pointlessness. All that's saved is a bit of latency perhaps and some
bandwidth for DNS lookups. That will get lost in the noise. Meanwhile
extra complexity is added to the server to dump and reload an old
cache. Things will get even uglier with views in BIND9. Each view has
its own cache. What if the server finds the view definitions changed
before the restart?

BTW, "persistent cache" is an oxymoron.

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