Actuator isn't the problem. Enabling it without a clear exposure policy is. A practical guide to using it as an operational tool without turning it into unnecessary public attack surface.
Jun 17 2026 · 8′ · Tutorials · devops · backend
OpenTelemetry in Next.js works, but the default propagator silently breaks the trace at the edge/node boundary. Here's what you need to configure explicitly so context doesn't vanish between Middleware, Server Components, and Server Actions.
Jun 17 2026 · 8′ · Tutorials · TypeScript · nextjs
A healthcheck that only says "the process is responding" can hide serious business-level failures. Let's break down what the HEALTHCHECK instruction actually promises, where the standard recipe falls apart, and how to use it as the limited operational signal it really is — not as a guarantee of heal
May 28 2026 · 8′ · Tutorials · node.js · docker
OpenTelemetry doesn't improve performance. It improves diagnostic quality when a slow request mixes DB, downstream, N+1, and partial errors. This reproducible lab shows which signals stay hidden when you only have logs, and what appears when you look at the trace.
May 16 2026 · 5′ · Experiments · Experimentos · backend
The autonomous agent incident forced me to redesign everything — from permissions to observability. This is what ended up running in production after the crisis: the real graph, the real numbers, and what still doesn't sit right with me.
May 08 2026 · 9′ · Experiments · TypeScript · produccion
The HN post has 127 points and nobody's talking about the real problem: when an async agent fails, you don't get a stack trace. You get silence. And silence in production is the worst bug that exists.
Apr 23 2026 · 9′ · Opinion · TypeScript · LLM
Japanese trains aren't good because of superior technology. They're good because they built institutions where failing costs more than maintaining. I've spent weeks thinking about what that means for software architecture — and why AI agents are going in exactly the opposite direction.
Apr 19 2026 · 9′ · Opinion · infraestructura · agentes-ia
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
213 articles published