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Aporeon

Technical interview practice, from one developer to another.

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React & Next.js Frontend Foundations

Next.js Rendering & Routing

Server/client components, rendering modes, hydration, route handlers, caching, and revalidation.

7 drillsPractice one at a timeOrdered pathArchitecture scenarioConcept question

Recommended start

Suspense and Streaming

Explains how Suspense boundaries stream useful page regions while coordinating loading, errors, and data ownership.

Hard~12 minStep 1 of 7

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1Suspense and StreamingRecommended startExplains how Suspense boundaries stream useful page regions while coordinating loading, errors, and data ownership.Architecture scenarioHard~12 minNext.jsReactTypeScriptPractice 2URL StateExplains when filters, sorting, pagination, and selection belong in search parameters and how to keep navigation predictable.Architecture scenarioMedium~10 minNext.jsReactTypeScriptPractice 3Server vs Client ComponentsExplains Next.js server/client component boundaries, interactivity, data access, serialization, and bundle impact.Concept questionMedium~7 minNext.jsReactTypeScriptPractice 4Rendering ModesExplains server rendering, client rendering, static rendering, freshness, SEO, personalization, and performance trade-offs.Concept questionMedium~7 minNext.jsReactTypeScriptPractice 5Hydration MismatchExplains why server HTML and client render can disagree, how to debug it, and how to avoid mismatch-prone code.Concept questionHard~9 minNext.jsReactTypeScriptPractice 6Route Handler BoundaryExplains route handlers as a frontend server boundary for cookies, API adaptation, auth, and backend calls.Concept questionMedium~7 minASP.NET CoreNext.jsReactPractice 7Next.js CachingExplains caching and revalidation choices for static, dynamic, user-specific, and frequently changing data.Concept questionHard~9 minNext.jsReactTypeScriptPractice

Practice order

7 drillsOne at a time

1Suspense and StreamingUp next / Hard / ~12 min
2URL StateMedium / ~10 min
3Server vs Client ComponentsMedium / ~7 min
4Rendering ModesMedium / ~7 min
5Hydration MismatchHard / ~9 min
6Route Handler BoundaryMedium / ~7 min
7Next.js CachingHard / ~9 min