Redux
Redux is a predictable state container for JavaScript applications, commonly used with React to manage global application state in a centralized store. It enforces a unidirectional data flow and immutable state updates through actions and reducers, making state changes predictable and easier to debug. It helps manage complex state logic in large-scale applications by providing a single source of truth.
Developers should learn Redux when building React applications with complex state management needs, such as multi-step forms, real-time data updates, or shared state across many components. It is particularly useful in large applications where prop drilling becomes cumbersome, as it centralizes state and simplifies debugging with tools like Redux DevTools. Use cases include e-commerce sites with shopping carts, dashboards with dynamic data, and collaborative tools requiring synchronized state.