Contact info resolution over DNS.

A from-the-ground-up walkthrough of how modern LLMs work, from tokens to transformer blocks to the next-token loop.

Great introduction to reservoir sampling, with interactive animations to build an intuitive understanding.

A 14kB page can load much faster than a 15kB page. This is because of the TCP slow start algorithm: to determine the bandwidth between itself and the client the web server starts by sending 10 small TCP packets and waits for an ACK from the client.

The size of these packets is 1500 bytes. Each TCP packet uses 40 bytes in its header — 16 bytes for IP and an additional 24 bytes for TCP. That leaves 1460 bytes per TCP packet. 10 x 1460 = 14600 bytes or roughly 14kB!

A reference manual for people who design and build software.

A detailed explanation of the interplay between many of the forces that act on a bicycle and its parts when riding. With lots of interactive illustrations.

In depth introduction to SVG.

Annotated version of the UNIX Magic Poster, originally created by Gary Overacre in the mid-1980s.

Annotated version of the UNIX Magic Poster, originally created by Gary Overacre in the mid-1980s.

A detailed explanation of the interplay between many of the forces that act on a bicycle and its parts when riding. With lots of interactive illustrations.

An opinionated list of git settings that most people likely don’t know about and which should probably be defaulted differently.

Overview of Relaxed Radix Balanced Trees, a data structure that allows for efficient merging of Persistent Vectors.

An overview of the Moon and its path around the Earth.