React Interview - Advanced Level
For senior developers with 4+ years of React experience. Master React internals, fiber architecture, advanced patterns, Concurrent mode, and architectural decisions.
35-45 minutes
4+ years of React experience
Who is this for?
Senior React engineers
Technical leads and architects
Engineers building large-scale React apps
Those preparing for senior/staff roles
What you'll practice
Understanding React fiber architecture
Architecting large React applications
Using Concurrent features
Implementing advanced state management
Performance optimization at scale
Server Components and SSR
Topics covered
React Internals
Fiber architecture
Reconciliation algorithm
Virtual DOM deep dive
Diffing algorithm
Concurrent React
Concurrent mode
Transitions
Suspense
useTransition
useDeferredValue
Advanced Architecture
Server Components
SSR and hydration
Code splitting strategies
Micro-frontends
State management at scale
Performance
Performance profiling
Bundle optimization
Rendering optimization
Memory management
Example questions
Q:
Explain how React's fiber architecture works
Q:
What is the reconciliation algorithm?
Q:
How does Concurrent mode improve user experience?
Q:
What are Server Components and when should you use them?
Q:
How would you architect a large-scale React application?
Q:
How do you optimize bundle size in a React app?
Preparation tips
Study React fiber architecture
Learn about reconciliation algorithm
Practice with Concurrent features
Understand Server Components
Study large-scale React architecture
Learn performance profiling techniques
Continue your journey
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