Notes on backend engineering, infrastructure, and production debugging — from a small fleet of Linux servers and the things they break.
A beginner's tour for people who have never traded: why confident-looking charts are almost always a red flag, what the Sharpe ratio is, and the four ways an ordinary backtest misleads you. No formulas, no jargon, one running example.
Real-world stories from production on Linux: slow swap growth, a week-long memory leak, a noisy neighbor on shared disk — and how Netdata helped catch all of it before users noticed.
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