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Compute rate, errors, and duration from a tiny request sample.
index.js
const requests = [20, 120, 80].map((duration, index) => ({ duration, ok: index !== 1 })); console.log('rate', requests.length); console.log('errors', requests.filter((request) => !request.ok).length); console.log('p95-ish', Math.max(...requests.map((request) => request.duration)));
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