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Redis Internals Bootcamp -- 4 sessions
Four 90-minute sessions. We read Redis source together -- event loop, key expiration, the AOF. You walk away able to find a memory leak in anybody's C code. Bring a laptop and a kitchen light.
Solo-Hacker Setup Tour -- Vim + tmux + why I never used an IDE
One hour. I show you my 2009 editor config. We argue about keybindings. You leave with a setup that lets you ship features without your hands ever leaving the home row.
Quake Engine Source Tour -- 2 hours, commented
We walk through the Quake engine line by line. BSP trees, visibility, collision, the network code. You will see why the game shipped on a Pentium 75 and still looked like magic.
Inner-Loop Consult -- I make your hot path fast
One hour on a video call. You show me your profiler output. I tell you what 30 lines to rewrite. Works for graphics, numerics, sim, game loops. Does NOT work for web backends -- that is a different sport.
Framework Extraction Workshop -- pull a library out of your real app
Three sessions. Bring a real codebase. We find the patterns worth extracting, pull them into a gem, and ship both the product AND the library. The Basecamp-to-Rails move, but on your code.
Rails Code Review -- I will tell you the truth
One hour. Push a branch, walk through it with me. I will be honest. Some people cry. Some people ship better code the next day. Most do both.
Git From First Principles -- it is just a content-addressable filesystem
Two hours. We rebuild Git from scratch: blobs, trees, commits, refs. By the end you will stop being scared of rebase and merge and know what a detached HEAD actually is.
Kernel Patch Review -- free, and I promise to be kind
Email me your kernel patch. I will review it. I owe the community this one. You get honest feedback. Free. You do not even have to say thank you. But it will be kind -- that is the deal I made in 2018 and I am keeping it.
FFmpeg From Scratch -- 2 hours, from fopen to H.264
We read the original FFmpeg source. I walk you through the demuxer, the codec, the filter graph, and the mux. By the end you will understand why every video on the internet passes through this code.
QEMU Emulator Tour -- How I Emulated x86 in C
One session. The dynamic translator, the TCG, the device model, the memory map. After this you will know how VMs actually work, not just how to run one.
TinyCC Source Bundle -- a 300KB C compiler
The TinyCC source bundled with my notes on why each module is structured the way it is. Free. Read it. Learn. Compile it. Fork it. Do not thank me.
Scaling a Messenger to 450M Users with 50 Engineers
One-hour talk. What we did. What we did NOT do (hint: most of it). Erlang decisions, database decisions, the sticky note. Also: how I said no to ads for five years.
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