Reversibility Is the MVP: How to Build Infra You Can Kill in 60 Seconds
Every deploy you can undo in one command is a deploy you'll actually try.
DevOps
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'404 Bad Gateway' Is a Legitimate Traefik Response (And Here's Why)
An 11-byte response body that reads 'Bad Gateway' on a 404 status - because the middleware meant to replace error pages lost its backend without anyone noticing.
What My Self-Hosted Keycloak + oauth2-proxy Setup Taught Me About Azure Entra ID
I can reproduce every OIDC gotcha in my home lab before Microsoft support would open the ticket.
Event-Driven Spokes vs. Polling: How I Cut Agent Latency 40×
HackerNews' Firebase SSE pushes new IDs in under a second. Our old cron polled every 5 min. Switching saved more than latency.
Cron Jobs Are the Missing Primitive for AI Agents
Most agent frameworks model agents as interactive. The useful work - watching, triaging, reporting - is scheduled.
LLM Serialization with fcntl: a 40-line Pattern for Single-Slot Inference Servers
Running llama.cpp with --parallel 1 means concurrent agents starve each other at the HTTP queue. A file lock solves it cleanly.
Mautic SAML Entity IDs Must Be URIs: A Debugging Story in Three Errors
Three stacked validators, one bare-string config, and an afternoon lost to SAML 2.0's dislike of non-URI identifiers.