Performance Optimization Overview Measure first, optimize second. This guide covers profiling techniques and optimization strategies. --- Profiling First The Golden Rule CPU Profiling (Node.js) Memory Profiling --- Database Optimization Query Optimization Explain Analyze Index Strategies --- Caching Cache Strategies Cache Invalidation Memoization --- Frontend Performance Core Web Vitals | Metric | Good | Description | |--------|------|-------------| | LCP | < 2.5s | Largest Contentful Paint | | INP | < 200ms | Interaction to Next Paint | | CLS | < 0.1 | Cumulative Layout Shift | Code Splittin…