How do you optimize React components for performance?

[krishd3v]

How can large applications be performance‑tuned using techniques such as memoization, lazy loading, and code splitting, while also understanding React’s rendering cycle to avoid unnecessary re‑renders and ensuring efficient state management for smoother user experiences?

[jaikrishna-j]

Optimizing React components requires a combination of strategies to reduce unnecessary re-renders and improve rendering efficiency.

React.memo prevents functional components from re-rendering when props remain unchanged.

useCallback and useMemo help memoize functions and values, avoiding costly recalculations.

Code splitting and lazy loading ensure only the necessary code is loaded, improving initial load times.

Virtualization libraries (such as react-window) optimize the rendering of large lists.

Efficient state management keeps updates predictable and ensures smoother user experiences.