The Engineering Leader's Guide to Observability Cost
There’s a strange thing about good observability. When it’s actually working, you stop noticing it. Think about the last time your monitoring really earned its keep. Maybe an alert fired...
How One Process Holds 100,000 Connections: A Tour Through the Network Stack
A question that bothered me for a long time: how does one NGINX process handle a hundred thousand simultaneous connections, while a Spring Boot app on the same hardware falls...
Why AI Needed Its Own Protocol
If you’ve built anything with REST APIs, you know the drill. You have endpoints, you send requests, you get responses. It works. It’s been working for over two decades. But...
The Skill Isn't Prompting
Everyone’s using AI coding agents now. Claude Code, Cursor, Copilot, Gemini. You describe what you want, and code appears. Sometimes it works beautifully. Sometimes you get something completely wrong. And...
Why p95 Doesn't Always Mean What You Think It Means
Percentiles are everywhere: dashboards, SLOs, alert pages, standups. They feel intuitive and precise. p95 latency is 120ms. Seems clear enough. 95% of requests are faster than 120ms. 5% are slower....