How do you optimize React application performance?
Instruction: Discuss strategies and techniques for optimizing the performance of a React application.
Context: Performance optimization is crucial for user experience. This question seeks to understand the candidate's ability to identify performance bottlenecks and apply optimization techniques in React.
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Start with a reproducible slow interaction or loading problem on representative devices, data and network conditions. Use browser traces to separate JavaScript, network, layout and paint costs; use React profiling to investigate component rendering. Compare repeated measurements and user-facing results, including loading, responsiveness and layout stability, before claiming an improvement.
Keep transient state close to its consumers and remove unnecessary effect-driven update chains...
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