Alan Alickovic React Application Architecture For Production [better] Instant

Alan pointed to a single file: services/websocket.ts .

// AFTER: Alan's Rule function ProductCard( product, onAddToCart ) // Only render logic. No data fetching. No side effects. // If it needs data, the PARENT provides it via a query. // If it needs to change data, it calls a prop callback. return <Card onClick=() => onAddToCart(product.id) />; alan alickovic react application architecture for production

// Before: Inside a component useEffect(() => fetch('/api/users').then(...) , []) Alan pointed to a single file: services/websocket

: Using ESLint and Prettier for consistent code quality. No side effects

Alex began the refactor, guided by three pillars of Alickovic’s architectural mindset.

"Listen," he said. "We are not building a React app. We are building a . There’s a difference."

"Never mix them," Alan said. "If a user closes a modal, don’t call the server. If a product price changes, don’t save it in Zustand. Everything has a home."