Writing robust regular expressions for log lines
A regular expression that parses a log line in your editor and a regular expression that survives a week of real traffic are rarely the same expressio…
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The Most Expensive Bug in Software Development Is Poor Communication
When people talk about expensive software bugs, they usually mention security breaches. Or outages. Or deployment failures. Those certainly cost money…
Why Retry Is One Of The Most Dangerous Keywords In Software
Few lines of code look more innocent than this: retry ( 3 ) It feels responsible. Professional. Resilient. After all, networks fail. Servers become un…
Not Your Weights, Not Your Workflow
I left a multi-agent refactor running overnight. By morning the model was gone, pulled out from under me by a government I don't even vote for, on the…
Idempotency Is More Important Than You Think
Most developers don't think about idempotency until production breaks. That's not because idempotency is an advanced concept. It's because everything …
The Non-Profit Food Delivery Fantasy: What V2EX Reveals About Platform Economics That Western Devs Haven't Figured Out Yet
Your favorite restaurant just closed. Not because the food was bad, not because foot traffic dried up — because the platform took 25% of every order a…
Why Your Local LLM Setup Is Costing More Than You Think — And What Happens When It Breaks
You're three hours into debugging a model quantization issue. The GPU utilization is sitting at 12%. Your M2 Max is running hot, the fans sound like a…
System Design Interview Roadmap (10 Concepts That Matter Most)
Disclosure: This post includes affiliate links; I may receive compensation if you purchase products or services from the different links provided in t…
How I Fixed Bugs in 30+ Open Source Projects (And What I Learned)
How I Fixed Bugs in 30+ Open Source Projects (And What I Learned) Over the past few months, I've been contributing to open source as an independent de…
I Built a Spaced Repetition Flashcard App and Deployed It to Azure for $5/month
A couple of years ago, I built a custom flashcard app. I had a huge list of words and sentences in Japanese that I collected in an Excel file. I wante…
Launching BabyChain: durable image and video model chains on AWS Aurora and Vercel
Today we are launching BabyChain : a self-hosted canvas studio and durable chain API for image and video model workflows. The short version is this: B…
The 3-Hour Redis Cache Bug: Automated with Pytest
It was 2 AM when my phone started buzzing like crazy. Operations had posted three frantic messages in a row: “Customer order status shows ‘Cancelled’,…
What only the pixels knew: giving a canvas agent eyes
At 05:53 on Friday morning, a session on Easel got asked a simple question: "What's that image?" The agent answered honestly. It located both images o…
The First Message Sent Over the Internet Was 'LO'
The first message ever sent across the network that became the internet was not "Hello, world." It was not a grand declaration. It was two letters, tr…
Meet Rux
There's no shortage of new programming languages these days, but every so often one comes along that's worth paying attention to early. Rux is a fast,…
Still Looking for Hackathon Teammates
Reposting because I still haven't found enough people and I'd really love to build a strong team for upcoming hackathons. Seems like there aren't many…
Rag Vs Fine-Tuning For Document Qa 2024
RAG vs Fine‑Tuning for Document Q&A in 2024: What You Need to Know Hey Build Log listeners, it’s Nick. If you’ve ever stared at an invoice for a c…
Fine-Tuning Transformers Vs Lora Vs Qlora 2024
Fine‑Tuning Transformers vs LoRA vs QLoRA 2024 – What You Need to Know Hey folks, Nick Creighton here. If you’ve been listening to the latest Bui…
Local Ai Deployment Cost Analysis 2024
Local AI Deployment Cost Analysis 2024 – How I Cut My Inference Bill to Under $50/Month Hey, it’s Nick. If you caught the latest episode of Build Log …
Developer take on: WASI 0.3.0 Released
Developer Take on: WASI 0.3.0 Released The WebAssembly System Interface (WASI) has been a long-awaited feature for the WebAssembly ecosystem. With its…
Will AI Agents Replace Programmers?
The question used to be a thought experiment discussed in tech forums between sips of coffee. In 2026, it feels a lot more personal. Large language mo…
One mp3, twelve panels.
Phase two of Reel shipped on Monday. A reader page can now play a voiced narration of the comic while the panels turn. The piece I want to write down …
AI Invoice OCR Explained: How Local AI Reads Your PDFs
jaklens.com Step 1 in depth: pdfjs-dist pdfjs-dist is Mozilla's PDF rendering library — the same engine that powers Firefox's built-in PDF viewer. In …
T3 Stack Complete Guide 2026: Next.js 15, tRPC v11, Drizzle + Neon
The T3 Stack was created to solve one specific problem: full-stack TypeScript apps where the type safety falls apart at the API boundary. You define t…
Fixing Bugs Is Easy. Preventing Their Return Is Hard
Most developers celebrate when they identify the root cause of a bug. The debugger finally reveals the problem. The fix is coded. Tests pass. A pull r…
Why Abstractions Leak
One of the most dangerous moments in a developer's career is when an abstraction works perfectly. Not because success is bad. But because perfect abst…
The AutoGPT Trap: When 'Accessible AI' Becomes Your Most Expensive Lesson
Your terminal is scrolling faster than you can read. The cursor blinks. A process you started "just to test" has now been running for 47 minutes, and …
The 360K-Star AI Assistant Nobody in the West Is Talking About — And What It Reveals About Cross-Platform Tooling in 2026
You're staring at your third AI assistant setup guide of the week. Cursor, Copilot, some obscure terminal tool that promises to "revolutionize" your w…
The Dev Tools I Actually Use as a Solo Rust + Tauri Developer in 2026
All tests run on an 8-year-old MacBook Air. All results from shipping 7 Mac apps as a solo developer. No sponsored opinion. Not a listicle of everythi…
LLM Memory System Pitfalls: A 3-Hour Bug Hunt Solved with Pytest Snapshot Testing
It was 2 a.m. when the alert call jolted me awake — our production Agent had suffered “amnesia” for three consecutive conversations. The context the u…