Automated Performance Testing In Preproduction

on YouTube ↗40m

" summary

Shows how to hook open source tools into CI to gate releases: spin up webpagetest on a staging build, run headless browsers (or Puppeteer/Selenium scripts) against realistic emulated networks, collect UX timings and user timings, run Lighthouse/PageSpeed/YSlow checks, store results (InfluxDB or HTTP Archive) and compare to historic baselines to detect regressions. Define absolute thresholds and performance budgets, run multiple iterations to avoid jitter, flag specific defects (huge assets, unoptimized media, blocking JS) and fail or annotate the build.

AI-written summary · about

" chapters (5)

1. 0:00Introduction and motivation
2. 8:47Performance as a bug
3. 18:40Metrics and budgets to track
4. 26:28Automating with open source
5. 37:44Implementation and summary

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