Essays and notes on AI, software engineering, developer tools, systems, and the shape of modern product building.
Antonio B De Castro

Beyond the hype: real-world lessons from replacing a Python microservice with Rust
Antonio B De Castro

The most popular database in the world just changed, and it signals a fundamental shift
Antonio B De Castro

Runtime type checking in TypeScript isn’t a nice-to-have—it’s where your type system meets the real world
Antonio B De Castro

Lambda didn’t replace servers—it found its niche and it’s a good one
Antonio B De Castro

The return to server-rendered HTML isn’t nostalgia—it’s pragmatism
Antonio B De Castro

How Elixir’s real-time framework makes React look like over-engineering
Antonio B De Castro

The prompting patterns that work, the tasks to never delegate, and the red flags to watch for
Antonio B De Castro

Each is excellent, but for very different reasons—here’s how to choose
Antonio B De Castro

Copilot and ChatGPT amplify expertise—they don’t replace it
Antonio B De Castro

Vulkan-level performance in the browser, and it’s not just for games