React Interview Questions: Mid-Level to Senior
A curated set of React questions and concise answers targeting mid-level to senior developers. Covers hooks internals, rendering, state management, performance, patterns, and React 19.
Writing on ReactJS, tutorials and best practices.
Dive into React concepts, hooks, state management, and essential libraries like React Query.
React Compiler: Automatic Memoization of Values
How the React Compiler eliminates useMemo for plain objects inside components — demonstrated with a working example that proves reference stability.
React Compiler: Automatic Memoization of Callbacks
How the React Compiler eliminates useCallback for plain functions inside components — demonstrated with a working example that proves function reference stability.
React Compiler and Custom Hooks: When Memoization Works and When It Doesn't
The React Compiler automatically memoizes custom hooks — but only real ones. This article shows how the compiler decides what counts as a hook and what gets skipped.
Mastering React Query: The Ultimate Guide to Server State Management
Discover how React Query revolutionizes server state management in React applications. Learn about data fetching, caching, synchronization, and performance optimization with practical examples and best practices.
React 19 Fundamentals: Complete Technical Reference
Comprehensive React 19 tutorial covering all fundamentals from basic concepts to advanced patterns. Generated from combined lessons with complete technical details.
React Performance: A Production Checklist
A layered, prioritised strategy for optimising React applications in production. Covers rendering, state, data fetching, bundle size, and architecture — the way enterprise teams approach it.