In message <7699449b-57ab-499c-93c2-dcf4049e4...@nic.br>, Rubens Kuhl writes: > > It depends. I can tell from experience that for a large outbound SMTP syste= > m(1M+ accounts), loss of DNS cache can hit it pretty hard. =
Except we are not talking about the loss of a cache (recursive nameserver) which requires failover to a different cache. We are talking about the difference to starting with a empty cache or a pre-populated cache and whether there is a significant difference from the clients perspective and for how many seconds there is a difference. There is definitely some additional latency for the first few queries but after how many queries do you fall within the normal latency profile? -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ dns-operations mailing list dns-operations@lists.dns-oarc.net https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
