Cheat Sheet
| Question | Core Idea | Senior Signal |
|---|---|---|
| Q226 | Waterfall | Read from document TTFB through LCP resource discovery, blocking assets, cache status, and vendors. |
| Q227 | Caching | Cache hashed assets immutably; keep HTML and private data on safer freshness policies. |
| Q228 | Resource hints | Use preload for current critical resources, prefetch for likely future work, and preconnect sparingly. |
| Q229-Q230 | Budgets and capstone | Automate regression checks and connect TypeScript contracts to runtime performance outcomes. |