# 40% Faster Interaction: How Wix Solved React's Hydration Problem with Selective Hydration and Suspense

DevFeed: [40% Faster Interaction: How Wix Solved React's Hydration Problem with Selective Hydration and Suspense](<https://devfeed.tech/articles/40-faster-interaction-how-wix-solved-react-s-hydration-problem-with-selective-hydration-and-suspense-22628.md>)

Original publisher: [Read original article](<https://www.wix.engineering/post/40-faster-interaction-how-wix-solved-react-s-hydration-problem-with-selective-hydration-and-suspen>)

Author: Wix Engineering

Published: 2025-11-09T12:58:45Z

Content type: tutorial

Language: en

Sources: [Wix Engineering](<https://devfeed.tech/sources/wix-engineering.md>)

Topics: [React](<https://devfeed.tech/topics/react.md>), [Server-side rendering](<https://devfeed.tech/topics/server-side-rendering.md>), [Core Web Vitals](<https://devfeed.tech/topics/core-web-vitals.md>)

Tags: [cdn](<https://devfeed.tech/tags/cdn.md>), [core-web-vitals](<https://devfeed.tech/tags/core-web-vitals.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [performance](<https://devfeed.tech/tags/performance.md>), [react](<https://devfeed.tech/tags/react.md>), [ssr](<https://devfeed.tech/tags/ssr.md>)

## AI overview

This Wix engineering article explains how React hydration can delay interactivity in server-rendered sites, particularly on mobile devices and slow networks. It introduces Selective Hydration, enabled by React 18's Suspense API, as an approach to preserve SSR benefits while improving interaction performance.

## Source excerpt

Introduction For years, one of React's most persistent performance pain points has been hydration. At Wix, where we render hundreds of millions of websites using React and SSR, we've experienced this problem at scale. SSR initially gave us everything we wanted - instant paint, great SEO, and full-site CDN caching. Our pages loaded faster than ever. But as sites grew richer and heavier with content, hydration became a tax we could no longer ignore. The more components a page had, the longer it...