After showing how a native union type replaces Either and Option in most cases, now comes the uncomfortable part: saying where fp-ts actually wins. It's not everywhere, and that's the point.
Sep 08 2026 · 7′ · Tutorials · TypeScript · node.js
I confused revalidatePath with revalidateTag on a small project and ended up invalidating pages that had nothing to do with the change. Here's the real difference between the two cache granularities in Next.js 16, with a decision checklist.
Sep 04 2026 · 7′ · Tutorials · Next.js · React
DeepSeek Reasonix shows up as a native coding agent with aggressive caching and low cost. Before you adopt it or dismiss it, there's a more useful question: what specific problem does it actually solve in a real stack, and what reproducible experiment confirms that?
Sep 03 2026 · 9′ · Opinion · LLM · ia
Cline lets you auto-approve every action the agent takes without asking permission. The button exists. The question is why, as an architect, I'd rather not touch it — and what hidden cost total autonomy has in a real codebase.
Sep 02 2026 · 7′ · Tutorials · AI agents · arquitectura de software
The difference between npm and pnpm isn't install speed. It's a different storage model — content-addressable store vs a folder tree — and that model matters based on project size, not on what's trendy.
Aug 29 2026 · 8′ · Tutorials · Next.js · pnpm
Docker's HEALTHCHECK is information, not a routing guarantee. If Kubernetes or Swarm isn't reading it, your container can be "healthy" and still keep taking requests that are going to fail.
Aug 28 2026 · 7′ · Tutorials · docker · devops
Yesterday I left a detail hanging: it's not that "something" blocks the carrier thread. There are exactly two scenarios, documented in JEP 444, and if you migrate legacy code without knowing them, pinning is going to explain why your virtual thread pool isn't scaling the way you expected.
Aug 28 2026 · 7′ · Tutorials · concurrencia · java
TigerFS is the storage layer TigerBeetle uses to guarantee total determinism. It's not competing with ext4 or btrfs: it solves a very specific problem in high-consistency financial systems.
Aug 22 2026 · 8′ · Tutorials · rust · sistemas distribuidos
Stateless JWT isn't the universal answer tutorials promise. If your system needs immediate revocation or fine-grained auditing, state isn't the enemy — it's the solution. Here's the decision framework I use in real identity systems.
Aug 18 2026 · 9′ · Tutorials · seguridad · JWT
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
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