In Redux, global state management is centered around three key concepts: actions, reducers, and the store. Understanding how these components work together is essential for effectively managing state in React applications with Redux. In this section, we'll explore each of these elements in detail.

Actions in Redux

Actions are simple objects that describe a change in the application's state. Each action must have a type property that indicates the type of action to perform. Optionally, actions can include additional data needed to perform that change.

Structure of an Action:

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Example of Actions:

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Reducers in Redux

Reducers are pure functions that determine how the state will change in response to an action. They receive the current state and an action, and return a new state.

Structure of a Reducer:

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Example of Reducers:

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The Store in Redux

The store is the object that contains the state of our application. In addition to storing the state, the store provides methods like dispatch to send actions, getState to get the current state, and subscribe to listen for state changes.

Creating the Store:

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Using the Store in React

To use the store in our React application, we wrap the components with the Provider from react-redux and connect the components to the store using useSelector and useDispatch.

Complete Example:

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Explanatory Image

Conclusion

Understanding actions, reducers, and the store is fundamental to working efficiently with Redux. These concepts provide a clear and predictable structure for managing global state in React applications. In the next section, we will explore Integrating Redux with React, where we will see how to connect components and use react-redux to manage state in your React application.