Redux is a popular state management library that plays a crucial role in many modern web applications. If you are using Redux or considering implementing it in your project, you might have wondered, "Where does the state actually get stored in Redux?" This question is fundamental to understanding how Redux manages application state.
In Redux, the state is stored in a single JavaScript object called the "store." This store holds the entire state tree of your application. The state tree represents the current state of your application and is a plain JavaScript object.
The store is created using the `createStore` function provided by the Redux library. When you call `createStore`, you pass in a function called a "reducer." A reducer is a pure function that takes the current state and an action as arguments and returns the next state.
Reducers are the core concept in Redux because they specify how the state of your application changes in response to actions. When an action is dispatched, the Redux store calls the reducer with the current state and the action. The reducer processes the action and returns the next state. Redux then updates the state in the store with the new state returned by the reducer.
It's important to note that in Redux, you should never mutate the state directly. Instead, you should always return a new state object from your reducer functions. This immutability ensures that Redux can accurately track changes to the state and enables features like time-travel debugging.
So, to answer the question, the state in Redux is actually stored in the store object created by the `createStore` function. The store maintains the state tree of your application, and reducers are responsible for updating the state in response to actions.
Additionally, you can access the current state in the store using the `getState` method provided by Redux. This method returns a copy of the current state object, allowing you to read the state in your application.
In summary, the state in Redux is stored in the store object, managed by reducers, and accessed using the `getState` method. Understanding where the state is stored in Redux is essential for effectively managing the state of your application and building robust and maintainable web applications.
We hope this article has clarified where the state actually gets stored in Redux and helped you better understand how Redux manages state in your applications. If you have any further questions or need assistance with Redux or state management, feel free to reach out. Happy coding!