technical

React Server Components

React components that run only on the server.

Definition

React Server Components (RSC) run exclusively on the server — no JS shipped to the browser. Next.js App Router uses RSC by default. Great for SEO + performance.

Related terms

Core Web Vitals

Google's user experience metrics.

LCP

Largest contentful paint — page load metric.

CLS

Cumulative layout shift — visual stability metric.

INP

Interaction to next paint — responsiveness metric.

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