DevelopmentNovember 28, 2024·7 min read

React Server Components Explained

Understanding the paradigm shift in React development and when to use server vs client components.

J
Javier Harrera
Writer

React Server Components represent one of the most significant changes to React since hooks. Understanding when and how to use them is essential for modern React development.

What Are Server Components?

Server Components are React components that render exclusively on the server. They can directly access databases, file systems, and other server-side resources without exposing that logic to the client.

The Benefits

Smaller bundle sizes: Server Components don't add to your JavaScript bundle. Complex logic and large dependencies stay on the server.

Direct data access: No need for API routes for internal data fetching. Components can query databases directly.

When to Use Client Components

Use client components when you need interactivity (onClick, onChange), browser APIs, state (useState, useReducer), or effects (useEffect).

The Mental Model

Think of your component tree as having a 'client boundary'. Once you use 'use client', that component and all its children become client components.

Server Components are the default in Next.js App Router. Embrace them for data fetching and static content, and reach for client components only when necessary.

Ready to Build with React Server Components?

Contact our team to discuss your React project. Also check out our article on Next.js 15: What's New for the latest framework updates.

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