An interactive tool that invites you to play and experiment with DNS to understand how it works!
Practical tools and tips to help you determine if downtime/slowness is caused by DNS, or something else!
A (timeline!) post about tools you can use to explore and understand BGP, the protocol at the root of Facebook's recent outage.
A clear explanation of quadratic-time vs. linear-time algorithms. Useful in interviews but also in real life!
Exactly what it says on the tin: A clear guide to how you can use GDB to look at and understand a program's stack space.
Julia figures out what a bridge is, how it works, and how to connect a VM to the internet using a bridge.
Julia is teaching a recurrent neural network to make good line drawings of faces.
A website where you can make themed poems out of digital refrigerator magnets. You can see the code here: https://github.com/jvns/refrigerator-forum
Julia wrote an open source implementation of Hey.com's "Focus & Reply" feature for Fastmail using JMAP, a new email protocol. Source: https://github.com/jvns/focus-reply-fastmail
An introduction to shaders, including how to make a 3D animated spinner.