React Server Components Explained: What Every Developer Needs to Know
React Server Components (RSC) render on the server, send zero JavaScript to the browser, and can directly access databases. They fundamentally change how we build React applications.
React Server Components are the biggest paradigm shift since React Hooks. They allow components to render entirely on the server.
How RSC Works
Server components run on the server during rendering. They can access databases, file systems, and APIs directly without exposing secrets to the client.
When to Use Server vs Client Components
- ●Server Components: Data fetching, accessing backend resources, keeping sensitive data on server
- ●Client Components: Interactivity, browser APIs, state management, event handlers
Performance Benefits
RSC reduces JavaScript bundle size by 30-70% because server component code never reaches the browser.
Composition Patterns
You can nest client components inside server components, but not vice versa. Use the "donut pattern" for layouts.
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Written by M Daniyal Amjad Ali
Full Stack Software Engineer with 5+ years of experience. Expert in Next.js, React, Node.js, and Prisma. 100+ projects delivered worldwide.