Lesson overview · Free interview practice

State Management

Learn Redux and other state management solutions.

Topics in the full lesson
  • Introduction to State Management
  • Redux Principles
  • React Context API
  • Modern State Management Landscape (2025/2026)
  • MobX
  • Comparing State Management Solutions
  • Practical Examples
  • Best Practices
  • Exercises

Practice Problems

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TheoryEasy

Redux Core Principles: Single Store, Pure Reducers, Immutability

Question

What are Redux's three core principles, and why do they matter? Show a complete Redux flow with code.

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TheoryMedium

Redux vs Context: The Decision Matrix

Question

When should you reach for Redux vs the Context API in a React app? Walk through the decision factors.

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TheoryMedium

The Context API: Prop Drilling Fix with Performance Caveats

Question

How does React's Context API solve prop drilling, and what are its known performance issues? Show the canonical optimization patterns.

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TheoryMedium

The Modern State Landscape: Redux, MobX, Zustand, Jotai, Recoil

Question

How do Redux, MobX, Zustand, Jotai, and Recoil differ in their approach to state management? Which one fits which use case?

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TheoryMedium

Redux Middleware: Thunk, Saga, and RTK Query

Question

What is middleware in Redux, and why is it needed for async operations? Show the three main approaches: thunk, saga, and RTK Query.

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