Expert50 min read
Advanced State Management Patterns
Explore advanced state management techniques including reducer patterns, state machines, and architectural patterns.
Topics Covered:
Complex ReducersState MachinesState ArchitectureGlobal State
Prerequisites:
- Concurrent Rendering and Suspense
Overview
Large applications require sophisticated state management. Learn patterns for managing complex state hierarchies and global state.
Complex Reducer Patterns
useReducer excels at managing complex state with predictable updates. Combine multiple reducers for sophisticated state management.
State Machines
State machines provide predictable state transitions. They're excellent for UI states with clear transitions.
Code Example:
const reducer = (state, action) => {
switch (state.status) {
case 'idle':
if (action.type === 'FETCH') return { ...state, status: 'loading' };
return state;
case 'loading':
if (action.type === 'SUCCESS') return { status: 'success', data: action.data };
if (action.type === 'ERROR') return { status: 'error', error: action.error };
return state;
// ... more states
}
};State machines make state transitions explicit and predictable. Every state has defined transitions.
Conclusion
Choose state management patterns based on your app's complexity. Start simple, evolve as needed.