📝 Logs in System Design (Part 2 of Observability Series)
Sep 11, 2025 · 4 min read · Introduction: Why Logs Matter Imagine you’re running a Payment API. Metrics tell you: “Error rate = 5% in the last 10 minutes.” But metrics don’t tell you why. To debug, you need logs — the detailed “story” of what happened inside your system. Lo...
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