Performance

Comprehensive performance optimization patterns for frontend, backend, and LLM inference.

Quick Reference

Category	Rules	Impact	When to Use
Core Web Vitals	4	CRITICAL	LCP, INP, CLS optimization with 2026 thresholds
Render Optimization	3	HIGH	React Compiler, memoization, virtualization
Lazy Loading	3	HIGH	Code splitting, route splitting, preloading
Image Optimization	3	HIGH	Next.js Image, AVIF/WebP, responsive images
Profiling & Backend	3	MEDIUM	React DevTools, py-spy, bundle analysis
LLM Inference	3	MEDIUM	vLLM, quantization, speculative decoding
Caching	2	HIGH	Redis cache-aside, prompt caching, HTTP cache headers
Query & Data Fetching	2	HIGH	TanStack Query prefetching, optimistic updates, rollback
Sustainability	1	MEDIUM	Page weight budgets, lazy loading, optimized formats, dark mode

Total: 24 rules across 9 categories