> That is true, but you have to substantially increase the overall number of > queries before you increase the frequency of cache misses across all TLDs. wrong. you only have to add a single popular TLD to substantially increase the frequency of cache misses. > IOW, if the number of queries per day stays static, then the introduction > of a TLD simply means that the average frequency per-TLD per-originator > declines. wrong. > In some cases this will result in more misses due to TLDs expiring from > non-use. The off-set is that popular TLDs get and stay cached due to > refreshes from multiple queries. Overall usage won't increase significantly. wrong. > The logical conclusion of your argument is that we should stick everything > into one big zone, with no hierarchy whatsoever. wrong. Keith