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32,354 Q&As
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PostgreSQL 10394 Prisma 7864 Next.js 5407 NextAuth.js 1656 Vue.js 1036 SVG Technical 160 Redis 131 Design Visual 102 Motion UX Art 101 TypeScript 92 Performance Patterns 2025 90 Rest API 86 Meta Framework Development 70 Node.js 70 Rust 70 OAuth Authentication 66 Prometheus 66 Terraform 66 RabbitMQ 64 Serverless Computing 62 Design Styles 60 Solid Dependency Inversion 60 OAuth JWT Security 56 Social Media Marketing 56 React 53 Python 52 React Advanced 52 LangChain Lcel Fundamentals 50 NGINX 50 Nosql Databases 50 OpenAI Function Calling 50 pgvector 50 Pinecone 50 Pydantic V2 Migration 50 Qdrant 50 RAG Patterns 50 Search Analytics 50 Solid Interface Segregation 50 Solid Liskov Substitution 50 Solid Open Closed 50 Solid Single Responsibility 50 Tailwind 50 Azure Cloud 48 OpenAI 48 TypeScript Type System 48 Microservices Architecture 47 GCP 43 AWS Core 41 Jenkins 41 JWT Token Security 40

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Q

Why does fetching in layout.tsx cause waterfall requests in Next.js App Router?

A

Layout components in Next.js App Router fetch data sequentially with their child routes because layouts wrap children and must render first. This creates a request waterfall where each nested layout waits for its parent.

Solution: Use parallel data fetching with Promise.all() or move data fetching to the page component. For shared data, use React's cache() function to dedupe requests.

nextjs app-router data-fetching Next.js Full-Stack Pack
Source: Next.js Data Fetching docs 99% confidence

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