Real User Monitoring в 2026: web-vitals.js, CrUX и анализ Core Web Vitals по перцентилям
Собираем Core Web Vitals с реального трафика: web-vitals.js v4, sendBeacon в visibilitychange, CrUX API, BigQuery и сегментация p75 по устройствам.
Nadia El-Sayed
Core Web Vitals specialist focused on real-user monitoring. Believes synthetic-only perf testing is a comforting lie.