Why React Server Components are the Future of E-Commerce

React Server Components shift rendering to the edge — zero JS by default, streaming SSR, and cache that actually hits. For E-Commerce, that means TTFB down 68% and conversion up.

We migrated a headless Shopify storefront to RSC + ISR. Bundle dropped from 380kb to 92kb, LCP 1.1s, and add-to-cart interaction stayed at 60fps even on mid-tier Android.

Key loadout: Next.js 15 App Router, fetch memoization, and on-demand revalidation via webhooks. No client waterfall, no hydration jank.