ReactJs Performance ~ Database and API Optimization~

Frontend performance means nothing if API takes 3 seconds to respond. backend optimization is frontend optimization. API performance strategies: 1. Implement efficient data fetching: // Bad: Sequential fetches (slow) async function loadDashboard () { const user = await fetchUser (); const posts = await fetchPosts ( user . id ); const comments = await fetchComments ( posts . map ( p => p . id )); return { user , posts , comments }; } // Total time: ~600ms // Good: Parallel fetches (fast) async fu