With a small, reproducible dataset in Jupyter, I compare what XGBoost actually does differently from scikit-learn's RandomForest — and why the answer isn't "which one is better" but "which problem is this for."
Sep 16 2026 · 8′ · Tutorials · machine learning · python
Correction: Spring Boot 3+ hides values by default. Start with the exact version and effective show-values configuration.
Sep 11 2026 · 2′ · Tutorials · spring-boot · java
depends_on without a condition only waits for the container to exist, not for the app inside it to respond. Only with condition: service_healthy in Docker Compose do you get a real guarantee of ordered startup.
Sep 09 2026 · 6′ · Tutorials · docker · devops
Pasting a Claude or DeepSeek API key straight into your code "just to test it quick" leaves a trail in your git history and your logs. A no-nonsense guide to environment variables, rotation, and what to check before sharing a repo.
Sep 09 2026 · 7′ · Tutorials · nextjs · anthropic
The Server Action resolves, the toast says "saved," and the UI still shows the old data for a beat. That beat is the gap setQueryData closes without waiting for the full server roundtrip.
Sep 08 2026 · 7′ · Tutorials · Next.js · React
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
A proposed method for observing network traffic during an AI agent task. No measured results or automatic attribution to individual processes.
Sep 07 2026 · 2′ · Tutorials · agentes-ia · networking
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
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
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
230 articles published