Browser & Web Performance · Senior · Question 72 of 75
What's the main idea of the RAIL performance model?
- 1Reduce, Avoid, Inline, Lazy-load as code rules
- 2Rendering, Assets, Images, Layout as four build steps
- ✓Correct answer: Response within 100 ms, animation frames within about 10 ms of work, idle work in small chunks, load content quickly
Explanation
RAIL frames performance around user perception. Core Web Vitals turned similar goals into measurable field metrics.