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A developer going by Nikolay has built something genuinely clever for anyone trying to understand PostgreSQL from the inside out. PGSimCity visualizes the database engine as a city, turning abstract concepts like query planning and buffer management into something you can actually walk through mentally. With over two hundred points on Hacker News, it's clearly striking a nerve among engineers who learn better through metaphor than documentation.
Shifting to the reliability side of AI, a team has spent the past week reproducing thirty real failures from production AI workflows, and the patterns they're finding are consistent. Things like malformed outputs breaking downstream parsing, silent model degradation, and context window mismanagement. It's a useful corrective to the idea that deploying AI is mostly a prompt engineering problem. In practice, the plumbing fails in very ordinary ways.
And on a smaller but satisfying note, a developer got fed up with tracking parameters cluttering every URL they copied and built PlainLink, a native Swift menu bar app for macOS that quietly strips those parameters from your clipboard before you ever paste them anywhere. It's the kind of tool that solves exactly one problem and does it without asking anything of you.
Keep surfing. Tech Beat out.
