Apr 20, 2026/Tech
Linear Attention Explained: The Core Concept and the Math, Without the Fluff
This article cuts the fluff, gets straight to the core concept and math, and explains every variable as it appears. Nothing is left undefined.
~/nathan
building practical AI systems
session://blog
$ cat featured/tech.log
Tech Writings
Systems, ML, LLMs, and the engineering details that decide whether ideas survive reality.
13 tech articles
Open article
Apr 19, 2026/Tech
Sliding Window Attention Explained: The Core Concept and the Math, without any fluff :)
This article is based on Longformer: The Long-Document Transformer (Beltagy, Peters & Cohan, 2020, arXiv:2004.05150). The paper introduces a scalable attention mechanism for long documents;...
Mar 26, 2026/Tech
Why Crypto Has Not Beaten Wall Street Yet (And Why That Question Might Be Wrong)
TL;DR: On public blockchains, your transaction sits in a visible waiting room before it goes through. Automated bots and block producers can read it, act on it, and leave you with a worse...
Mar 24, 2026/Tech
vLLM: A More Efficient Way to Serve Large Language Models
When an LLM generates a response, it stores intermediate computations called the KV cache in GPU memory at every step. Traditional serving frameworks pre-allocated memory for each request...
Mar 19, 2026/Tech
Git Worktrees: The Essential Git Feature Many Developers Still Do Not Use
But there is a feature that quietly solves one of the most common sources of friction in everyday development. Many developers have heard about it. Very few actually use it in practice.
Mar 18, 2026/Tech
Google Analytics Worked on Localhost but Failed on GitHub Pages. Here’s What I Learned.
A beginner-friendly debugging story about static sites, Next.js, Google Analytics, and why production can behave very differently from local development.
$ cat featured/beyond-tech.log
Beyond Tech
Notes on growth, mindset, inner architecture, and the human side of becoming better.
5 non-tech articles
Apr 21, 2026/Beyond Tech
AI is moving too fast. Here is how I am keeping up
Much of the overwhelm around AI comes from familiar software ideas being dressed up in new vocabulary. Reframing it that way makes keeping up much easier.
Apr 7, 2026/Beyond Tech
Do Not Let LLM Costs Kill a Good Idea Too Early
Building is getting easier. The only thing that matters now is a GOOD IDEA and FREAKING GREAT EXECUTION.
Apr 5, 2026/Beyond Tech
It is high time to start documenting your life and work.
Agents will be far more useful to people who have structured, persistent memory. (I have started using obsidian)