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There's a fundamental mistake in this article. I quote: "But the “phone book” mental model might make you think that if you make a DNS query for google.com, yo
by Firehawke 5y ago
There's a fundamental mistake in this article.
I quote: "But the “phone book” mental model might make you think that if you make a DNS query for google.com, you’ll always get the same result. And that’s not true at all!"
Phone books are not a static model either. If you were to look up "Walmart" in your local phone book, you're going to get a different set of phone numbers for the Walmart stores around you as compared to five states to the West or East of where you are. As such, the mental model really is apt.
- zimpenfish 5y agoDoesn't the sentence from the article mean "even from the same place, you can get different results" though? As in you're looking in (ostensibly) the same phone book but getting different numbers - not that you're looking in different phone books. I can look up www.google.com from 3 different machines here on my local network (behind a single ipv4 nat'd address) and get 3 different IPs as a result.