2025
Development
Web Performance: Why Every Millisecond Counts
Speed is part of the user experience. It also affects search rankings and how people see your brand. Where the milliseconds go and which metrics to track.
3 min read · Alejandro
Development
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2025
Development
Page Speed Case Study: From 5.2 Seconds to 0.52
How a site went from 5.2 to 0.52 seconds without a redesign: compressed images, font loading, then critical JavaScript and CSS, one phase at a time.
3 min read · Alejandro
2025
Development
Web Accessibility Isn't Optional: Where to Start
Accessibility helps far more people than screen reader users. Who benefits, the basics many sites skip (contrast, headings, keyboard use) and the business case.
2 min read · Alejandro
2024
Development
Modern CSS Features You Should Be Using Now
Container queries, :has(), cascade layers, subgrid and mature CSS variables. What each one lets you drop, what old habits cost, and current browser support.
3 min read · Alejandro
2024
Development
Edge Computing: When It Makes Sense and When It Doesn't
Running code close to users sounds ideal. Which workloads suit the edge, why an edge API that still calls a distant database gains little, and when to skip it.
2 min read · Alejandro
2024
Development
Is TypeScript Worth It? The Trade-Offs Explained
TypeScript adds friction at the start. In return it catches errors while you write code, documents your types and makes refactoring safer. When to use it.
3 min read · Alejandro
2024
Development
Monorepo vs Multiple Repos: When a Monorepo Isn't Worth It
Google's monorepo runs on decades of in-house tooling. With public tools, a monorepo can add overhead to smaller teams. When it pays off and what to do instead.
3 min read · Alejandro
2023
Development
How to Run Database Migrations in Production Safely
A process for changing a production database schema: non-destructive steps, testing on a production clone, handling large migrations and tools that help.
3 min read · Alejandro
2023
Development
Technical Debt Is Real Debt: How It Grows and What It Costs
Technical debt charges interest in time, money and missed chances. How it builds up, the debt you don't see, when taking it on makes sense and how to manage it.
3 min read · Alejandro