Mastering Node.js Performance Hooks

Node.js includes a built-in module called performance hooks for precise performance measurement. But why use it when you can simply log timestamps and calculate the difference between two dates? At least because it is precise. The module uses a monotonic clock that allows you, as a user, to make performance measurements and be sure that they are not corrupted. At first, I struggled to understand h

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ユーザーの端末の影響を受けるwall clockとパフォーマンスの計測に適したmonotonic clockについて。 Node.jsの`perf_hooks`モジュールで利用できる`PerformanceObserver`では monotonic clockの時間を取得でき、基本的な使い方についてなど