A Deep Dive into DNS Debugging is a deep dive into the world of DNS. Let’s dig a little deeper and figure out what was going on and what to do about it. The first step of this investigation was to refresh my memory about how NodeJS and request actually do DNS resolution and measurements.
Table of contents
Bisecting the problemProduct Research: How would you build a proper DNS check?Building a quick DNS Check with NodeJS and DigReproducing things that almost never happen with ChecklySet up tcpdump on a private location and wait some moreNow for the fix!Sort: