As frontend applications grow in complexity, having a solid architecture becomes crucial. Here are some patterns I've found effective for building scalable React applications.
Component composition is fundamental. Build small, focused components that do one thing well. Use composition to combine them into more complex UIs rather than building monolithic components.
State management can make or break your application. For simple apps, React's built-in useState and useContext are often sufficient. For more complex state, consider libraries like Zustand or Redux Toolkit.
Separating concerns is key. Keep your business logic separate from your UI components. Custom hooks are excellent for encapsulating logic that can be reused across components.
Don't forget about performance. Use React.memo for expensive components, implement virtualization for long lists, and lazy load routes and heavy components.