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How We Upgraded RabbitMQ to v4 Without Breaking 8M Daily Celery Tasks

How We Upgraded RabbitMQ to v4 Without Breaking 8M Daily Celery Tasks

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5 min read
Stop rebuilding from scratch: cache Docker layers on Cloud Build

Stop rebuilding from scratch: cache Docker layers on Cloud Build

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14 min read
Factur-X / ZUGFeRD from HTML: how to embed EN 16931 XML in a PDF/A-3 and actually pass veraPDF and Mustang

Factur-X / ZUGFeRD from HTML: how to embed EN 16931 XML in a PDF/A-3 and actually pass veraPDF and Mustang

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15 min read
I automated my injection tests, and my first automated result was wrong 👾

I automated my injection tests, and my first automated result was wrong 👾

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6 min read
Claude Code vs Cursor vs Codex: I Tested All Three on the Same Task

Claude Code vs Cursor vs Codex: I Tested All Three on the Same Task

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3 min read
An AI agent is just a while loop. I built one in 70 lines of Python, then tricked it into leaking my .env

Fixing security in runtime code, not prompts

An AI agent is just a while loop. I built one in 70 lines of Python, then tricked it into leaking my .env

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15 min read
Making Refresh Tokens Actually Work in a FastMCP Google OAuth Server

Making Refresh Tokens Actually Work in a FastMCP Google OAuth Server

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5 min read
I built a testing tool for AI agents — it caught a real prompt-injection vulnerability in a local model

I built a testing tool for AI agents — it caught a real prompt-injection vulnerability in a local model

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1 min read
Web data for LLM fine-tuning: a practical 2026 guide

Web data for LLM fine-tuning: a practical 2026 guide

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4 min read
Give the Model One JSON Job. Run Everything Else Yourself.

Give the Model One JSON Job. Run Everything Else Yourself.

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7 min read
Build a Two-Host Canary for a Small AI CLI

Build a Two-Host Canary for a Small AI CLI

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7 min read
Competitor pricing data is only useful if you model its failure modes

Competitor pricing data is only useful if you model its failure modes

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4 min read
under_investigation is a status, not an excuse

under_investigation is a status, not an excuse

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6 min read
I Built My Own Programming Language Because I Wanted Code to Read Like English

I Built My Own Programming Language Because I Wanted Code to Read Like English

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3 min read
PyArrow, Explained: How Zero-Copy Actually Works, and Why It's Everywhere

PyArrow, Explained: How Zero-Copy Actually Works, and Why It's Everywhere

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10 min read
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