React
Internals, React 19, Server Components and architecture.
- RCT.01Rendering model and componentsexplain what a render is, when React renders and what it commits.3 concepts · 2 ready
- RCT.02Reconciliation and fiberexplain how React decides what to update and how fiber enables interruptible rendering.3 concepts
- RCT.03Hooks in depthuse every built-in hook correctly and explain how hooks work.6 concepts
- RCT.04Effects in depthwrite correct effects, and avoid effects that should not exist.4 concepts
- RCT.05React 19 featuresuse React 19's APIs and know what changed from 18.3 concepts
- RCT.06Server rendering and React Server Componentsexplain SSR, hydration, streaming and RSC precisely.4 concepts
- RCT.07Next.js (current version)build with the current Next.js App Router and explain its caching and rendering.3 concepts
- RCT.08Component patternsdesign reusable, composable components.4 concepts
- RCT.09State management and data fetchingchoose where state lives and which tool manages it.4 concepts
- RCT.10Formsbuild robust, accessible forms.2 concepts
- RCT.11Performance in Reactfind and fix React performance problems with measurement.2 concepts
- RCT.12The custom-hooks roundimplement common custom hooks under interview conditions, with correct cleanup and stable identities.8 concepts
- RCT.13React architecture at scalestructure and evolve large React codebases (L3–L4).2 concepts
- RCT.14SEO and accessibility in React appsship React apps that search engines and assistive technologies understand.2 concepts
- RCT.15Other frameworks (awareness) and React Nativetalk sensibly about Angular, Vue, Svelte, Solid and React Native in interviews.1 concepts