Redux Architecture

Introduction

Redux is a predictable state container for JavaScript applications that helps you manage application state in a consistent way. This lesson will cover the architecture of Redux, its key components, and how to effectively implement it in your applications.

Key Concepts

• State: The single source of truth in Redux.
• Actions: Payloads of information that send data from your application to your Redux store.
• Reducers: Functions that specify how the application's state changes in response to actions.
• Store: The object that brings actions and reducers together, holding the application's state.

Redux Architecture

graph TD;
    A[User Interface] -->|dispatches| B[Actions];
    B --> C[Reducers];
    C --> D[Store];
    D --> E[State];
    E -->|updates| A;
            

Step-by-Step Process

1. Define the state shape of your application.
2. Create action types and action creators.
3. Write reducers to handle actions and update the state.
4. Create the Redux store with the reducers.
5. Connect components to the Redux store using React-Redux.

Best Practices

• Keep state normalized to avoid duplication.
• Use middleware for side effects such as API calls.
• Make use of selectors for accessing state.
• Encapsulate state logic in reducers to improve testability.

FAQ