Node.js isn't just "JavaScript on the server." It's a paradigm shift in how we handle I/O. Thirty years in tech taught me to recognize when something genuinely moves the ground beneath your feet.
Jul 08 2026 · 5′ · Experiments · javascript · node.js
Actuator isn't the problem. The problem is enabling it without a clear exposure policy. A pragmatic guide to using it as an operational tool without turning it into unnecessary public attack surface.
Jul 06 2026 · 8′ · Tutorials · devops · backend
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
Kubernetes technical interviews have a problem nobody names: they ask about objects you'll never touch in production, while ignoring the mistakes that actually break real systems. Here's the map I was missing.
Jun 16 2026 · 9′ · Tutorials · docker · devops
Prisma Client logs show you what queries the ORM generated. PostgreSQL has its own observability layer. Confusing the two is the source of incomplete diagnostics. Here I separate the two planes and give you a concrete criterion for deciding which one to look at first.
Jun 11 2026 · 8′ · Tutorials · TypeScript · backend
Prisma 6 improves ergonomics and performance, but there are three behavior changes that won't scream at you in the compiler — and will absolutely show up at runtime if you don't audit your relational queries first. Practical guide with checklist.
Jun 03 2026 · 8′ · Tutorials · TypeScript · backend
Actuator isn't the problem. The mistake is adding it to a project with no clear exposure policy. Here I break down which endpoints to enable, which to block, and what decisions to make before the first deploy.
Jun 01 2026 · 7′ · Tutorials · backend · produccion
strict: true is not enough — and it's not the whole story. A flag-by-flag breakdown of what each strict mode option actually does, what bugs it prevents, and the order to enable them in an existing codebase.
May 31 2026 · 8′ · Tutorials · TypeScript · backend
Auth tutorials show you the happy path. The real problems in digital identity show up in revocation, state-change propagation, and the trust model. A decision guide from the inside.
May 30 2026 · 9′ · Tutorials · backend · seguridad
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
213 articles published