Practical articles on AI, DevOps, Cloud, Linux, and infrastructure engineering.
Edge code runs in hundreds of PoPs, lives for milliseconds, and gives you no shell. Here's how we get logs, traces, and metrics out of it anyway.
A team was burning 40,000 CI minutes a month and could not say why. Here is how GitHub Actions billing actually works and where the money leaks.
Three Git commands that all "undo" things, and picking the wrong one on a shared branch is how you ruin a teammate's afternoon. Here's how to keep them straight.
The Compose failures that eat an afternoon are almost always the same six. Here's how to spot each one fast and the fix that actually sticks.
A bloated build context slows every build, wrecks your cache, and quietly leaks secrets into images. Here's how to keep it lean.
Spot cuts compute bills by 60-90%, but AWS can take the machine back in two minutes. Here's how we run real production on it without paging anyone.
When RAG answers go sideways, the model usually isn't the problem. Here's the top-to-bottom checklist we run to find where retrieval actually breaks.
A practitioner's guide to picking the right LLM API for coding, long docs, cheap extraction, reasoning, vision, voice, and on-device work.
A 502 from your ingress means no healthy backend to talk to. A 504 means the backend answered too slowly. Here's how to tell them apart and fix each.
Grafana pulls metrics from anywhere, Kibana lives and dies with Elasticsearch. Here's how we pick between them without ending up running both by accident.
Static keys leak and live forever. Short-lived credentials from STS and Vault expire on their own — here's the token-exchange machinery and the TTL math that make it work.
Verifying signed tokens at the edge with WebCrypto blocks bad traffic early and saves a full origin hop. Here's the pattern we ship, and the traps.
