Chapter 4: Architectural Principles in React

🧩 Most React apps don’t break because of bugs.
They break because the architecture can’t evolve.

In this chapter, we explore how React is meant to be structured — starting with Onion Architecture and moving into the compositional principles that keep React apps flexible and scalable.

This is about building systems that bend without breaking.

🎯 What You’ll Learn
🔹 Why Architecture Matters
Why even “small” React apps need structure
How poor architecture slows teams over time

🔹 Onion Architecture in React
Separating core logic from UI and side effects
Creating clear dependency boundaries
Keeping business logic stable as the app grows

🔹 Composability: The Heartbeat of React
Why React favors composition over inheritance
How composability improves reuse and clarity

🔹 Component Composition Patterns
Specialization — purpose-built components
Lego-style composition — small, reusable building blocks
When to use each approach

🔹 React’s Design Philosophy
Data flow, boundaries, and responsibility placement
Avoiding tight coupling between components

🔹 Practical Refactoring Patterns
Turning rigid components into flexible compositions
Making components easier to extend without rewrites

🚀 Why This Chapter Matters
This chapter gives you the architectural foundation you need before applying SOLID principles in the next chapter.

🧪 Practice Along
📂 All React exercises & refactoring tasks from this webinar:
👉 https://github.com/CW-Codewalnut

🎙️ Instructor
This session was led by Ben Sheridan-Edwards
👨‍💻 CTO & AI Engineering Lead at CodeWalnut

🔗 Connect with Ben on LinkedIn:
👉 https://www.linkedin.com/in/bensheridanedwards/

🌰 Learn More with CodeWalnut
We help developers:
✅ Write clean, readable & maintainable React code
✅ Understand architecture, abstractions & trade-offs
✅ Refactor confidently instead of rewriting everything
✅ Think like senior & top 1% engineers, not tutorial followers

👉 Learn how we help engineers level up:
https://www.codewalnut.com/

🙌 Before You Go
👍 Like the video
💬 Comment which composition style you overuse — specialization or Lego-style
🔔 Subscribe for more deep-dive React engineering sessions

Видео Chapter 4: Architectural Principles in React канала CodeWalnut