Vanity performance metrics are worthless
summary
Claims live or die on specifics: shows undocumented Chrome devtool APIs, proves measuring visual completeness (speed index) and timed user interactions gives real user signal, documents Facebook Lite as a 1MB app with 100M monthly users, measures India needing ~17 hours' minimum wage to buy 500MB, compares microwave link latencies (~4.2–5.2 ms) and a $500M tower sale, and builds a clean-room environment that collects geo-distributed metrics and runs them inside a continuous integration server.
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chapters (12)
- 0:00Intro
- 4:37India
- 7:51Internet
- 13:36Strategies
- 13:46Responsive Web Design
- 15:06Web Performance Metrics
- 16:06What is a good metric
- 17:28The 3 most important metrics
- 19:34User Interactions
- 20:29Connectivity can never be guaranteed
- 21:33Callebaut
- 22:31Steve Jobs
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18mWebsite performance from user perspective
36mMoneyball for Performance Metrics
30mMeasuring Web Performance - Metrics & Tools
21mState of Performance
44mAiming for the Stars
33mDemystifying Web Performance Tooling