What is Redux, and why is it used in React apps?
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What is Redux?
Redux is a state management library for JavaScript applications, commonly used with React. It provides a centralized store where the entire application state is kept, making it easier to manage, debug, and scale complex apps. Redux is based on three core principles:
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Single Source of Truth – The entire state of the app is stored in one centralized store.
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State is Read-Only – State cannot be changed directly; it can only be updated by dispatching actions.
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Changes are Made with Pure Functions (Reducers) – Reducers are pure functions that take the current state and an action, then return a new state.
Why is Redux used in React apps?
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Manages Complex State – In large React apps, state often needs to be shared across multiple components. Redux eliminates prop drilling by providing a global store.
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Predictability – Since state updates happen in a strict flow (action → reducer → new state), debugging and testing are easier.
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Debugging Tools – Redux DevTools allow developers to track state changes, time-travel debug, and replay actions.
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Scalability – It organizes state management in a structured way, making apps easier to maintain as they grow.
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Consistency – With a single store,
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