State Management Patterns

What problem does it solve?

This Skill helps you choose and implement the optimal state management solution for your React application, preventing common pitfalls like unnecessary re-renders, boilerplate, and complex data flows. It provides a practical decision framework for building scalable and maintainable frontend architectures.

Core Features & Use Cases

• Decision Matrix: Guides you in selecting the right tool (Zustand, Redux Toolkit, Context API, React Query) based on app complexity, team size, and specific requirements.
• Implementation Patterns: Provides concrete code examples for each pattern, from simple useState + Context to enterprise-grade Redux Toolkit and server-state management with React Query.
• Performance Optimization: Teaches techniques like splitting contexts and using selectors to prevent unnecessary component re-renders, ensuring a smooth user experience.
• Use Case: You're building a medium-sized React app and need global state for user authentication and notifications. Use this skill to decide that Zustand is the best fit, then implement a store with async actions and selectors, ensuring a clean and performant solution.

Quick Start

Example: Zustand store for global app state

import { create } from 'zustand'; import { devtools, persist } from 'zustand/middleware'; import { immer } from 'zustand/middleware/immer'; interface AppState { user: User | null; notifications: Notification[]; } export const useAppStore = create<AppState>()( devtools( persist( immer((set, get) => ({ user: null, notifications: [], setUser: (user) => set({ user }), addNotification: (message, type) => set((state) => { state.notifications.push({ id: Date.now().toString(), message, type }); }), })), { name: 'app-storage', partialize: (state) => ({ user: state.user }) } ) ) );