Unified State Management in Composable Systems

1. Introduction

Unified state management in composable systems is essential for maintaining a coherent data flow in applications built with headless and composable architectures. This lesson explores strategies to effectively manage state across various components of a system.

2. Key Concepts

3. State Management Strategies

• Centralized State Management: Use a single store for application state to improve predictability.
• Local State Management: Manage states locally within components for smaller applications.
• State Synchronization: Ensure data is synchronized between server and client using state hydration techniques.

4. Implementation

Implementing unified state management can be achieved using various libraries like Redux or Zustand in JavaScript applications. Below is an example using Redux.

// actions.js
export const ADD_ITEM = 'ADD_ITEM';

export const addItem = (item) => ({
    type: ADD_ITEM,
    payload: item,
});

// reducer.js
import { ADD_ITEM } from './actions';

const initialState = {
    items: [],
};

const itemReducer = (state = initialState, action) => {
    switch (action.type) {
        case ADD_ITEM:
            return {
                ...state,
                items: [...state.items, action.payload],
            };
        default:
            return state;
    }
};

// store.js
import { createStore } from 'redux';
import itemReducer from './reducer';

const store = createStore(itemReducer);
export default store;
                

5. Best Practices

• Keep state minimal and relevant to the component.
• Use selectors to access the state in a predictable manner.
• Leverage middleware for side effects and asynchronous actions.

6. FAQ