> Change to: > > If clients cache the results of name lookups for performance reasons, > they are strongly encouraged to get and observe the TTL (Time To > Live) information reported by the name server. If this is not > feasible, clients must not cache the results of name lookups for > longer than 10 minutes, and must immediately discard a name lookup > result if a network error occurs when using the result to initiate a > connection. I have some additional ideas. Danzig., et.al (SIGCOMM92 ??) shows that NEGATIVE caching DNS will help to reduce DNS traffic quite a bit. Negative cache means when DNS lookup fail (may be after 2-3 trails) for that particular host, we should cache the result (the failure) for a short time to avoid subsequent look up (which likely to fail again). Say 2 minutes. AnawatReceived on Saturday, 30 March 1996 17:59:10 UTC
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