🔄 State Management

Master state management patterns and tools for complex React applications

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State Management Curriculum

11
State Units
~50
Patterns & Tools
15+
Real Projects
Modern
Solutions
1

State Management Fundamentals

Learn the core concepts and importance of state management in applications.

  • What is state?
  • Local vs global state
  • State complexity
  • State management patterns
  • Unidirectional data flow
  • State mutations
  • State normalization
  • Performance considerations
2

useState and useReducer

Master React's built-in state management hooks for local component state.

  • useState hook deep dive
  • State updates and batching
  • useReducer hook
  • Reducer pattern
  • Complex state logic
  • State initialization
  • Functional updates
  • When to use each
3

Context API

Share state across components without prop drilling using React Context.

  • Context concept
  • Creating contexts
  • Provider pattern
  • Consuming context
  • useContext hook
  • Multiple contexts
  • Context composition
  • Performance optimization
4

Redux Fundamentals

Learn Redux for predictable state management in large applications.

  • Redux principles
  • Actions and action creators
  • Reducers
  • Store
  • Dispatching actions
  • Subscribing to state
  • Middleware
  • DevTools
5

React Redux

Connect Redux to React components using the official React Redux library.

  • Provider component
  • useSelector hook
  • useDispatch hook
  • connect function
  • mapStateToProps
  • mapDispatchToProps
  • Container components
  • Reselect library
6

Redux Toolkit

Use Redux Toolkit for efficient and modern Redux development.

  • Redux Toolkit overview
  • configureStore
  • createSlice
  • createAsyncThunk
  • Immer integration
  • RTK Query
  • createEntityAdapter
  • Best practices
7

Zustand

Explore lightweight state management with Zustand.

  • Zustand basics
  • Creating stores
  • State updates
  • Subscriptions
  • Async actions
  • Middleware
  • Persistence
  • TypeScript support
8

Jotai and Atomic State

Learn atomic state management with Jotai for flexible state composition.

  • Atomic state concept
  • Creating atoms
  • useAtom hook
  • Derived atoms
  • Async atoms
  • Atom families
  • State composition
  • Performance benefits
9

Server State Management

Handle server state with specialized tools like React Query and SWR.

  • Client vs server state
  • React Query (TanStack)
  • SWR library
  • Caching strategies
  • Background updates
  • Optimistic updates
  • Error handling
  • Infinite queries
10

State Architecture Patterns

Design scalable state architecture for large applications.

  • Feature-based organization
  • Domain-driven design
  • State machines
  • Event sourcing
  • CQRS pattern
  • State normalization
  • Micro-frontends state
  • Testing strategies
11

Performance Optimization

Optimize state management for better application performance.

  • Render optimization
  • Memoization techniques
  • State slicing
  • Lazy loading state
  • Bundle splitting
  • Memory management
  • Debugging tools
  • Performance monitoring

Unit 1: State Management Fundamentals

Learn the core concepts and importance of state management in applications.

What is State?

Understand the fundamental concept of state in web applications.

Data UI State Server State Form State
State represents any data that changes over time in your application. It includes user interface state, server data, form inputs, loading states, and any other dynamic information that affects what users see and how they interact with your app.
// Examples of different types of state
const [count, setCount] = useState(0); // UI state
const [user, setUser] = useState(null); // Server state
const [isLoading, setLoading] = useState(false); // Loading state
const [theme, setTheme] = useState('light'); // Preference state

// State affects what users see
return (
  <div className={theme}>
    {isLoading ? 'Loading...' : `Count: ${count}`}
  </div>
);
Simple State Example:
0

Local vs Global State

Learn when to use local component state versus global application state.

Local State:
• Used by a single component or small component tree
• Form inputs, toggles, temporary UI state
• Managed with useState or useReducer
• Examples: modal open/closed, form field values
Global State:
• Shared across multiple components
• User authentication, theme preferences, shopping cart
• Managed with Context, Redux, or other state libraries
• Examples: current user, app settings, cached data

Unidirectional Data Flow

Understand the principle of unidirectional data flow in state management.

Data Flow Principle:
Data flows in one direction through your application, making state changes predictable and easier to debug. Actions trigger state updates, which flow down to components.
Action
→
State Update
→
UI Update