Optimizing Performance in Large-Scale React & Node.js Applications
summary
Claims that 47% of users expect pages under 2s and a 1s delay cuts conversions ~7%, then shows concrete fixes and measured wins: uses Chrome DevTools, Web Vitals extension, Lighthouse/Unlouse reports and React Profiler to spot hot components; applies lazy + Suspense for a 100-record football JSON, reduces redundant work with useMemo (renders drop from ~3.3ms to ~1.6ms), uses AG Grid for large datasets, and for Node.js explains event loop phases, offloads heavy work to worker threads/clusters and swaps console.log for async logging (Winston).
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chapters (18)
- 0:00Performance optimization intro
- 1:49Defining web performance
- 3:54UX metrics explained
- 6:26First impression metrics
- 8:14Core web vitals impact
- 11:31Performance measurement tools
- 13:59React optimizations
- 17:52Avoiding re-renders
- 20:24useEffect cleanup
- 21:07React Profiler monitoring
- 23:15AG-Grid data tables
- 23:56Node.js performance basics
- 25:00Node.js event loop
- 26:50Node.js safe coding
- 28:14Node.js concurrency
- 31:25Scaling Node.js
- 31:48Q&A on JavaScript vs TypeScript execution
- 32:53Core web vitals origin
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