
Автор: Julia Evans
Издательство: wizardzines.com
Год: 2022
Язык: английский
Формат: pdf (true)
Размер: 12.1 MB
Have you ever updated your site’s DNS records, nothing changed, and you had no idea why? This zine is for you! DNS has a bad reputation. It has terrible terminology, it’s totally invisible what’s happening behind the scenes, changes take a seemingly arbitrary amount of time to be applied, there are literally millions of computers that could be caching your records, there’s often no way to clear the caches, and if you mess it up you can take your site down for hours. Great. And DNS is also everywhere! You have to set it up every time you create a new domain, so most of us come into contact with it at some point. Most people use it very infrequently, so it’s very normal to just copy and paste DNS records without understanding what they mean and hope for the best. How DNS resolvers work, including a working implementation in Python (and how they can lie to you).