React lazy ssr If you want to disable pre-rendering for a Client Component, you can use the ssr option set to As I mention in the Only using code splitting section, its perfectly fine to just use code-splitting if your use case doesn't require the merits of SSR. lazy is just using our bundler’s code splitting & bundling capacity (be it Webpack, parcel or any other), and providing a syntax on top of it. The issue is that my page is always empty on the first request after booting up the server. The post was not whether SSR can be faster (especially with react 18 and its streaming SSR, selective hydration and suspense mechanisms even on server), but whether CSR with code splitting and lazy loading along with service worker is that slow which warrants the need for SSR and invest money in compute servers, CI/CD pipelines, terraform Skipping SSR. 前提理解として、SSRとHydrationについて軽く触れておきます。 SSR とは. Jun 8, 2021 · This also means that React. However, the problem was that Suspense and code-splitting using React. If you're brave, you could also roll your own or adapt another existing data-loading package to work with react-async 跳过 SSR. lazy() and Suspense, Client Components will be prerendered (SSR) by default. If you are already using React. Lazy data. NB Name must be unique for the component being loaded, NOT unique Feb 18, 2020 · In reality, React. lazy() method, it can be used in server-side rendering with react-async-ssr. React ships with exports to facilitate code-splitting. What are the differences between React. Create a new file named App. react-lazy-ssr is a drop-in substitute for React. Installing necessary dependencies. GetNameAsync must be defined here. It’s achieved through a combination of React. Requires React 16. lazy 允许你延迟加载组件，只有在渲染时才通过网络请求对应模块。 使用 Suspense 处理加载状态 Suspense 提供 fallback，在组件加载完成前显示占位符。 配置路由 使用 react-router-dom 的 Routes 和 Route 定义页面路由。 Aug 24, 2022 · A guide on using Leaflet for adding OpenStreetMap to a React application, with a hint of SSR and Preact thrown in the mix. lazy 和 Suspend，用于动态加载组件。然而 React. 9. getTags (); const linkHeaders = collector. lazy can only work with Suspense. React 16. React는 기본적으로 제공하는 React. Currently lazy (in React v16. lazy substitute which works with server-side rendering Usage. jsx in the src directory and add the following code: Effects defines an Ajax request for getWeatherAsync to get the weather data. When Not to Use React. lazy, which is used to code-split your JavaScript bundle into smaller parts, it provides the first pieces of the puzzle towards fixing the remaining waterfall drawbacks. Lazy loading lets React defer loading large components or routes until they’re actually needed. This generally involves: Creating a new React project. Note. lazy and Suspense to optimize performance. lazy substitute which works with server-side rendering. lazy 와 Suspense 를 사용해 컴포넌트를 지연 로딩할 수 있습니다. lazy()と組み合わせて利用します。 SSRでは利用できませんでしたが、<Suspense>でラップすることでJS Loadされる前にHydrateすることができます。 跳过 SSR. x or 16. It starts with get+name+Async and ends with an Async function because in the framework you're going to match regular functions like this, and then you're going to call that method and send the request, and then you're going to store it in redux. There are 3 other projects in the npm registry using react-lazy-ssr. Here are some key steps to consider: Creating a Basic Component. The vite-plugin-ssr project has been renamed Vike. . Aug 5, 2021 · 服务器端渲染（在本文中缩写为“SSR”）让您可以从服务器上的 React 组件生成 HTML，并将该 HTML 发送给您的用户。SSR 允许您的用户在您的 JavaScript 包加载和运行之前查看页面的内容。 React 中的 SSR 总是发生在几个步骤中： 在服务器上，获取整个应用程序的数据。 Jan 2, 2023 · Together with React. Let’s create a simple React component to demonstrate SSR. js still attempts a minimal server render (generating some HTML) unless you explicitly disable SSR with ssr: false. Using next/dynamic with ssr: false forces the component to only render on the client. Note: ssr: false option will only work for Client Components, move it into Client Components ensure the client code-splitting working properly. lazy() with Suspense for code splitting. Feb 15, 2022 · 有了lazy和Suspense的支持，另一个特性就是 React SSR 能够尽早对已经就绪的页面部分注水，而不会被其他部分阻塞。从另一个角度看，在 React 18 中注水本身也是 lazy 的。 这样就可以将不需要同步加载的组件选择性地用lazy和Suspense包起来（和客户端渲染时一样）。 React 不会在你尝试首次渲染返回的组件之前调用 load 函数。在 React 首次调用 load 后，它将等待其解析，然后将解析值的 . FC = => null export const NoSSR: React. In this comprehensive 4,300+ […] Oct 25, 2021 · React. If you're brave, you could also roll your own or adapt another existing data-loading package to work with react-async Dec 8, 2021 · I have a ReactJS app built with react-lazy-load-image-component in order to improve performance. next/dynamic. Lazy to use React Suspense. rc file in the plugins array 6 days ago · React allows developers to build encapsulated components that manage their state and then compose them to make complex user interfaces more efficient through changes in data. lazy is the recommended solution for Code Splitting. 4, last published: 4 years ago. 8. By only loading components when they are needed, we can reduce initial bundle sizes and dramatically improve load performance. Improve this answer. Use it along with Suspense to show appropriate loading states to your users. lazy and @loadable/components? React. Now that your React Vite project is set up for SSR, it’s time to build your application. lazy实现组件的延迟加载技巧详解 在当今的前端开发领域，React无疑是最受欢迎的库之一。其强大的组件化架构和灵活的状态管理使得开发者能够高效地构建复杂的用户界面。 Using React. lazy and SSR are not used to play nicely together before v18. Feb 3, 2023 · React is a library commonly used for developing Single Page Applications (SPAs) that rely heavily on JavaScript. lazy，那么在客户端上，您可能已经拥有了水合所需的所有数据，但还没有路由定义！ ！理想情况下，您的设置会在服务器上确定匹配的路由，并在关键路径上交付路由包，这样您就不会在最初匹配的路由上使用 l As I mention in the Only using code splitting section, its perfectly fine to just use code-splitting if your use case doesn't require the merits of SSR. ) What Is SSR? When the user loads your app, you want to show a fully interactive page as soon as possible: 懒加载路由 . It uses Suspense and it is maintained by React. Lolo D. lazy and if you are good with it, you don't need @loadable/component. 用 React 18 的 lazy 和 Suspense 改写，就可以支持 Selective Hydration，使得 SSR 真正支持 code splitting。如果 Content 组件的 JS bundle 还没有加载完成，在 hydration 阶段，渲染到 Suspense 节点时会跳出，而不会让整个 hydration 过程失败。 React. Understanding these pros and cons is crucial for making informed decisions about your application architecture. 🕹️ Playground. 🚀 Key Takeaways: Use React. But that’s now in the past. This reduces the initial JavaScript bundle size, leading to faster load times and a snappier user experience — especially critical for mobile or slow-network users. lazy and SSR. Here's a demo. Suspense 解锁了 React 18 中的两个主要 SSR 功能： Apr 21, 2024 · The guide will cover three main methods for disabling SSR: not defining getServerSideProps or getStaticProps in your page component, using dynamic imports with next/dynamic for components that cause SSR issues, and implementing lazy loading with React. Mar 10, 2022 · React Suspense is a React component that pauses (suspends) an element’s rendering unless all the data it requires is available. React. Nov 7, 2018 · Then, we need to install react-loadable-ssr-addon *the one that makes the magic happens* to handle the application assets and react-loadable to dynamically load components and handle code splitting. D. Together, Vite and React provide the best combination for building performant and scalable web applications. サーバー側でデータフェッチ、HTML、CSSの構築などの各処理を実行してからクライアントに描画データを返却すること. lazy() 和 Suspense 时，客户端组件默认会被预渲染 （SSR）。 注意： ssr: false 选项只适用于客户端组件，将其移至客户端组件以确保客户端代码分割正常工作。 如果你想禁用客户端组件的预渲染，可以使用设置为 false 的 ssr 选项： Feb 6, 2023 · An API that can be used to suspense the component execution. lazy were not compatible with SSR yet, until React 18. Lazy loading applies to Client Components. default 渲染为 React 组件。返回的 Promise 和 Promise 的解析值都将被缓存，因此 React 不会多次调用 load 函数。如果 Promise 被拒绝，则 React 将抛出 Oct 14, 2022 · React. lazy() and Suspense. Follow answered Jul 5, 2024 at 3:39. Fetch data using Suspense in React Server Components (RSC). Here's how you can dynamically import a component that requires SSR: Here's how you can dynamically import a component that requires SSR: May 8, 2020 · For SSR support: npm i @loadable/server && npm install — save-dev Installing Plugins to babel and webpack If you have a “babel . lazy and Suspense. 6 版本提供了 React. Start by setting up a basic React application that can support SSR. It assures that data is ready before rendering components and helps avoid loading components with pending data. Over my 15+ years working on React performance, I‘ve helped over 200 startups implement component lazy loading properly. React will always suspend and show the fallback ui for lazy components on the first server render unless you preload all lazy components using something like react-lazy-with-preload first. You can read more about the details in one of React’s GitHub discussions on architecture . Start using react-lazy-ssr in your project by running `npm i react-lazy-ssr`. lazy 和 Suspend 并不适用于 SSR，我们仍需要引入第三方的动态加载库： React. SSRの流れ Jan 8, 2025 · Here is the basic, step-by-step guide to implementing SSR in a React project. (If you don’t use a framework, you will need to change the exact way the HTML generation is wired up. lazy() for SSR support. 2. It supports several things React. Feb 22, 2025 · 使用 React. Setting up a React Project with Vite and SSR Mar 3, 2022 · SSR: @loadable/component provides a complete solution to make Server Side Rendering possible, whereas React. ; For new projects, don't use vite-plugin-ssr but use Vike instead. If you want to do code-splitting in a server rendered app, we recommend Loadable Components. If you feel limited or if you need SSR, then @loadable/component is Mar 16, 2022 · React 一开始引入 <Suspense> 组件的作用是在客户端支持懒加载。但目标其实是与服务器渲染集成并解决目前的已知问题。 让我们学习一下如何在 React 18 中使用 <Suspense> 来解决这些问题。 React 18：流式 HTML 和选择性补水. Before that, I always use Next. react-lazy-data is a ready-to-go simple solution for async data loading which is designed to work with react-async-ssr. react-lazy-ssr is a drop-in substitute for React. js when it comes to SSR. lazy() If your component is small and used frequently across the app (e. H. The code-splitting and lazy-loading part is taken care of by Webpack during compilation when it sees the dynamic import() function being called. With React. js, you should use their built-in dynamic() method instead of React. 0+ is not supported at present. But what exactly does it mean? Well, in the simplest terms, React Hydration is the process of making a server-rendered React app fully interactive on the client side. lazy method makes it easy to code-split a React application on a component level using dynamic imports. Mar 4, 2025 · Now, let’s explore the advantages and disadvantages of React SSR in more detail. lazy doesn’t, including SSR! First things first, we need to install the loadable-components Apr 29, 2019 · The React. Code: npx create-react-app react-ssr-app. React server-side rendering offers several benefits but comes with its own challenges. lazy(), designed to work with react-async-ssr. lazy support SSR, it's just Suspense does not support SSR before react18. lazy is not an option when it comes to Server Side Rendering. Unfortunately SSR (though planned) is not supported at this point. Server-Side Rendering (SSR) : Leverage frameworks like Next. Why do we need SSR? It's an important and very common question in the interview. I’ve moved from renderToString() to renderToNodeStream(). May 21, 2025 · Code Splitting and Lazy Loading Use React. lazy와 Suspense를 활용한 컴포넌트 지연 로딩. next/dynamic is a composite of React. g. 10. Jan 4, 2025 · Template: react-ssr-streaming-template; Vite Extra Template: template-ssr-react-streaming-ts; Related Articles This is part of my series on SSR with React. lazy for components and loading="lazy" for images to improve load times. lazy 动态加载组件 React. rc” file then add it to the . Client-side only Jun 16, 2023 · Hey guys, I’m having a little issue with React. The exact way you would load data in the Albums component above depends on your framework. In the past, the web app was always Feb 4, 2023 · 前提：SSR と Hydration について. getLinkHeaders (); // The link header below now contains res. Stay tuned for more articles! Building Production-Ready SSR React Applications; Advanced React SSR Techniques with Streaming and Dynamic Data; Setting Up Themes in SSR React Applications Dec 17, 2021 · 「SSRのつらいとこ」でちょろっと言及していたReact. lazy. React v16. If you use a Suspense-enabled framework, you’ll find the details in its data fetching In @refactor answer, the react-no-ssr is not working for some typescript issue. , a button or icon), don’t lazy load it — you’ll just add extra overhead. Enter loadable-components. lazy 는 동적으로 컴포넌트를 import할 수 있도록 도와주는 함수입니다 Aug 20, 2024 · React Hydration is a term that you might have come across if you've been working with server-side rendering (SSR) in React. When using React. Unlike React's built-in . Babel plugin make unique IDs per lazy() call #26 opened Apr 5, 2020 by overlookmotel An in-range update of eslint-plugin-import is breaking the build 🚨 greenkeeper Feb 25, 2025 · Lazy Load Images and Components: Use React. In fact, when a request is made from a browser, React returns an empty HTML page and the content is actually loaded using JavaScript after the initial page load. You might want to check out react-loadable to handle the cases where you wish to preload components server side. It is a way to show a fallback while the component is suspended. Lazy-loading component code with lazy; Reading the value of a cached Promise with use; Suspense does not detect when data is fetched inside an Effect or event handler. Because Suspense is not available in Server-Side and React. x. js for faster initial loads and better SEO. Oct 31, 2024 · React使用Suspense和React. I just wrote a very simple NoSSR component as below: import { ReactNode, useEffect, useLayoutEffect, useState } from 'react' const DefaultOnSSR: React. 6. Share. What sets next/dynamic apart from React. Latest version: 0. 如果您在路由中使用了route. lazy "just works" with SSR now. 16. Advantages of React SSR May 9, 2025 · If you're using frameworks like Next. So unlike client-rendered apps where users see a blank page while waiting for the JavaScript to load in the background, SSR creates a better user experience by Dec 12, 2024 · React에서 Lazy Loading 구현 방법 1. Advantages and Challenges of React SSR. Lazy, you can import a component dynamically, and it loads Dec 6, 2024 · Building Your React SSR Application. My code wraps components that take time to initialize with something like: <h2 className={styles. I guess the problem is that renderToNodeStream doesn’t wait until the component has been loaded on the server during the first React component to do progressive/partial hydration. The HTML is generated on the server and then sent to the client (browser). lazy is its compatibility with server-side rendering (SSR). lazy() 和 Suspense 时，客户端组件默认会被预渲染 （SSR）。 注意： ssr: false 选项只适用于客户端组件，将其移至客户端组件以确保客户端代码分割正常工作。 如果你想禁用客户端组件的预渲染，可以使用设置为 false 的 ssr 选项： react-lazy-ssr is a drop-in replacement for React. react-lazy-ssr is a drop-in replacement for React. The objective of this component is to delay the hydration on client side from SSR applications, in order to increase TTI performance until this is natively supported by react (not to lazy load a component). lazy 可以在服务端完成这些事了，我们把评论组件的代码从主包中分割出来。 Jul 16, 2023 · SSR and React 18: React. 1) doesn't support SSR completely. writeHead Jan 8, 2025 · 懒加载是一种在需要时才加载资源的策略，它允许我们将组件、图片、样式表或其他资源延迟加载到页面的某个特定点。在 React 中，懒加载通常用于延迟加载组件，尤其是对于那些不是一开始就需要渲染的大型组件或页面。 After React v18 is published, I think it's time to build React app with server-side rendering (SSR) once with those new APIs. After that, the content is successfully loaded. 0 Steps to Reproduce Setup an MUI app with SSR via Express Setup a lazy={() => import()} route Load the SSR endpoint for that route Observe that there is a double render Expected Behavi Mar 17, 2025 · Client-Only Execution: Even if your component has 'use client', Next. lazy() with Suspense; By default, Server Components are automatically code split, and you can use streaming to progressively send pieces of UI from the server to the client. Lolo Nov 19, 2024 · 上一篇文章中我们通过搭建一个简单的SSR框架介绍了SSR的基本原理，框架的渲染流程是先获取数据，然后调用renderToString方法渲染组件。这种方式是串行的，也就是说只有在数据获取完成之后才能开始渲染，组件在完全渲染完成之后，将完整的HTML返回给客户端。 Dec 5, 2024 · Component lazy loading is an important yet often misunderstood optimization technique for React applications. lazy and Suspense are not yet available for server-side rendering. Step 1: Basic Project Setup for SSR. 虽然可以提前发送 html，但是首次渲染输出的 js 过大，也需要一些执行时间，通常在客户端渲染无非做两件事，代码拆分，按需加载。 React. cd react-ssr-app Mar 9, 2022 · Server-side rendering (SSR) in React is the process of rendering React components to HTML on the server. Oct 9, 2023 · What version of React Router are you using? 6. Choosing the right approach depends on your Feb 3, 2025 · Whether you’re optimising your React app by lazy loading components, fetching data in Server Components, or leveraging Streaming SSR, Suspense makes your UI feel smoother and faster. Lazy Loading: It splits the bundle, loading the component only when needed. FC<{ children: ReactNode; onSSR?: Aug 21, 2021 · React takes care of translating the imported JS file into a React component so that it can be rendered using JSX. If you are already using vite-plugin-ssr then migrate to Vike. Your child component should implement lazy loading via React. 使用 React. onAllReady {const linkTags = collector. zbmcjcaqajoooweowtarzbkzuuwdyvbwnywxtuxnxjiabclanqdqtblpon