Funktion RSC (React Server Components) SSR (Server-Side Rendering) CSR (Client-Side Rendering) Render placering Server Server Client JavaScript sendt til browseren 🔸 Ingen ✅ Ja ✅ Ja Kræver hydrering 🔸 Nej ✅ Ja ✅ Ja Interaktivitet 🔸 Nej ✅ Fuld ✅ Fuld ✅ Fuld adgang til serverressourcer ✅ Direkte ✅ Via getServerSideProps 🔸 Kræver API-opkald Når det kører On-demand eller streamed Per anmodning På load i browseren Ideel case brug Statisk eller data-bound views Personaliseret eller dynamisk UI Interaktive strømninger, lokal UX af afRSC (react server komponenter)afSSR (server side rendering) af af Giver placering af afaf af afKræver hydrering Ja til afInteraktivitet Nej Fuld Fuld Adgang til serverressourcer ✅ Direkte ✅ Via getServerSideProps 🔸 Kræver API-opkald afaf On-demand eller streametafEfter anmodning af af afInteraktive strømninger, lokalt UXafaf af afRSC (react server komponenter)afSSR (server side rendering) af af SSR (server side rendering) af Giver placering af af af af afKræver hydrering Ja Kræver hydrering Ja til Interaktivitet Nej Fuld Fuld Fuld af Adgang til serverressourcer ✅ Direkte ✅ Via getServerSideProps 🔸 Kræver API-opkaldaf direkte afaf afOn-demand eller streametafEfter anmodning afaf On-demand eller streamet Efter anmodning af af afPersonligt eller dynamisk UIafInteraktive strømninger, lokalt UXaf af Funktion Server-komponent Client-komponentaf Funktion Server-komponent Client-komponent Effektaf af ✅ (hvis det er statisk) afasync / venteaf (skal indpakkes i effekter) Funktion Server-komponent Client-komponentaf Kundens komponent af Effekt afaf ✅ (hvis det er statisk) af ✅ (hvis det er statisk) af afasync / venteaf (skal indpakkes i effekter) async / vente af (skal indpakkes i effekter) afafRSC hentet fra DB, ingen interaktivitet, ingen behov for at hydrereAddToCartButton CSR Kræver interaktivitet og lokal statusafafaf af af afÅrsagen RSC hentet fra DB, ingen interaktivitet, ingen behov for at hydrere Afhænger af brugerens session, dynamisk efter anmodningafafAddToCartButton CSR Kræver interaktivitet og lokal status af afSSG (med ISR) af af afÅrsagen af af Årsagen RSC hentet fra DB, ingen interaktivitet, ingen behov for at hydrere Hentet fra DB, ingen interaktivitet, ingen behov for at hydrere Afhænger af brugerens session, dynamisk efter anmodningaf af AddToCartButton CSR Kræver interaktivitet og lokal statusaf af afSSG (med ISR) af af af af (*Hvis du gerne vil hoppe videre og dykke direkte ind i den tekniske sammenbrud, skal du hoppe til 1. I begyndelsen af 2010'erne revolutionerede React frontend-udviklingen med sin deklarative komponentmodel og effektive virtuelle DOM diffing. Det, der begyndte som et simpelt visningsbibliotek, blev snart rygsøjlen for store single-page-applikationer (SPA'er). Disse SPAs brugte overvejende Client-Side Rendering (CSR), hvilket betyder, at browseren ville downloade en JavaScript-pakke, udføre den og bygge brugergrænsefladen helt på klienten. Denne klientcentrerede model var fleksibel og meget interaktiv, og den definerede "moderne" webapps i årevis. af Længere Time-to-Interactive (TTI): Hård JavaScript bundter og klient side arbejde betød, at brugerne ventede længere, før de rent faktisk kunne interagere med siden. Converting server-rendered HTML into an interactive app (hydration) became a performance choke point, especially as the amount of dynamic content increased. Hydration bottlenecks: Overfyldte bundter: Applikationer leverede ofte langt mere JavaScript end nødvendigt, hvilket belastede browsere med kode for funktioner eller indhold, der kunne have været leveret mere effektivt. Ydeevne, der ikke skaleres: Jo større og mere kompleks appen er, jo sværere bliver det at opretholde hurtig ydeevne på tværs af alle enheder og netværksforhold. Next.js emerged to tackle some of these pain points by introducing Server-Side Rendering (SSR), Static Site Generation (SSG), and other optimizations. These techniques improved initial load times and offloaded some of the UI rendering work to the server. But even with SSR and SSG, the fundamental issue remained: we were still over-delivering JavaScript to the browser. Fast forward to 2025. With Next.js 15 running on React 19, a new rendering paradigm has taken center stage: . RSCs allow developers to seamlessly blend server-rendered and client-rendered components in a single React tree. The implications are significant. Static parts of the UI can now be delivered as pure HTML with . In other words, no client-side hydration is needed for those sections. Data fetching logic is also simplified by running inside server components, eliminating many unnecessary API calls from the browser. The result: leaner client-side bundles, faster interactions, and an application that’s far more performant and scalable. React Server Components (RSC) zero JavaScript overhead Denne artikel er ikke en overfladisk gennemgang af RSC. Da jeg begyndte at skrive om at bruge Next.js effektivt i 2025, blev det hurtigt klart, at React Server Components fortjente en dedikeret dybdykning. Til sidst håber jeg, at du kommer væk med den samme klarhed og anerkendelse for RSC, som jeg gjorde gennem processen med at forske og skrive dette stykke. Intro: From CSR to RSC — How Rendering Evolved in React Intro: Fra CSR til RSC – hvordan rendering udviklede sig i reaktion I løbet af det sidste årti har den måde, vi opbygger React-applikationer, udviklet sig grundlæggende, og med den måde, vi tænker på rendering. 🕰 A brief history of Client-Side Rendering (CSR) in React React gained its popularity through - en model, hvor browseren downloader JavaScript, udfører det og bygger hele brugergrænsefladen på klienten. Denne tilgang gav udviklerne fuld kontrol over interaktivitet og tilstand, og gjorde det nemt at opbygge dynamiske enkeltsideapplikationer (SPA'er). Client-Side Rendering (CSR) Men CSR kom med bemærkelsesværdige kompromisser: af af , especially on mobile or poor networks Slower initial loads Dårlig SEO til indholdsdrevne sider — even for pages with minimal interactivity JavaScript-heavy bundles A was required after HTML loaded, delaying time-to-interactive hydration step For a while, these limitations were just “how things were.” Then Next.js changed the game. 🚀 How Next.js brought SSR and SSG to mainstream React development When entered the scene, it introduced server-side rendering (SSR) and static site generation (SSG) as first-class citizens for React. This marked a turning point: frontend developers could now choose how and when rendering occurred. Next.js af af SSR gjorde det muligt at generere sider efter anmodning, hvilket forbedrede SEO og indlæsningshastighed for dynamisk indhold. SSG tillod, at indhold blev forudbygget på tidspunktet for implementering, perfekt til blogs, dokumenter og markedsføringssteder. Incremental Static Regeneration (ISR) brød kløften ved at tillade statiske sider at blive opdateret efter implementering. This flexibility helped developers strike a better balance between performance, SEO, and developer experience. But even with SSR and SSG, there was still a lingering issue: - selv for komponenter, der ikke behøvede at være interaktive. we were still sending too much JavaScript to the browser Fremkomsten af React Server Components (RSC) i 2025 Med frigivelsen af and , we’ve entered a new era: are now a core part of how we build apps. Next.js 15 React 19 React Server Components (RSC) I modsætning til SSR, som stadig kræver hydrering og leverer JavaScript til klienten, . RSC allows you to render components on the server — without sending any JavaScript to the browser at all Det er et stort skifte: af Components can now access server-side data directly Static content doesn’t require hydration You can mix server and client components in a single React tree, composing your rendering strategy per component RSC doesn’t replace SSR or SSG, it , unlocking finer-grained control over performance, bundle size, and rendering behavior. complements them In 2025, RSC is a foundational concept that every senior React engineer needs to master. 1. Why React Server Components Were Introduced 1. Why React Server Components Were Introduced As React applications became more complex, the industry began to feel the weight of its success. While Client-Side Rendering (CSR), Server-Side Rendering (SSR), and Static Site Generation (SSG) offered different strategies for building performant web apps, each of them carried trade-offs that grew more apparent at scale. 🚧 Limitations of CSR, SSR, and SSG 1. af Hydration overhead Even with SSR or SSG, once HTML reaches the browser, React needs to “hydrate” the page — attach event listeners, reinitialize components, and effectively rebuild the app in memory. For large component trees, hydration can be a major bottleneck for Time-To-Interactive (TTI). 2. JavaScript bundle bloat With CSR, every component, utility, and API call that’s part of the page must be sent to the browser — regardless of whether it’s interactive or not. SSR and SSG reduce this slightly, but most of the bundle still needs to be executed on the client. As apps grow, this leads to bloated bundles that slow down the user experience. 3. Disconnected data-fetching logic I pre-RSC-verdenen levede data uden for de komponenter, der gengav det. eller (or call APIs in ) to fetch data, then pass it into components via props. This separation added cognitive overhead and made code harder to co-locate and reuse. getServerSideProps getStaticProps useEffect Hvilke problemer RSC er designet til at løse React Server Components (RSC) were created to address these growing pain points with a simple but powerful idea: af . let components execute on the server by default, and only send JavaScript to the browser when it’s absolutely necessary Eliminate unnecessary JavaScript RSC allows components to be rendered server-side Hvis en komponent ikke kræver interaktivitet, er der ikke behov for at hydrere eller indlæse sin JS-pakke overhovedet. Uden ✅ Server-side data access within the component tree RSC removes the artificial boundary between data fetching and rendering. Server components can use to directly access databases, file systems, or APIs — co-locating data and view logic naturally, with no need for API routes or prop drilling. async/await ✅ Improve rendering efficiency and developer experience Ved at flytte ikke-interaktiv logik til serveren kan udviklere opbygge lettere apps med mindre bundter og bedre ydeevne. RSC forenkler også den mentale model - du skriver kun komponenter, og lad rammen håndtere, hvor de kører og hvordan de leveres. RSC doesn’t aim to replace SSR or SSG, instead, it complements them. It lets you think , not just the page level, about what should run on the server and what belongs in the browser. at the component level In short: React Server Components were designed to bring modern frontend development back to its lean, fast, and maintainable roots without compromising interactivity. 2. Rendering Strategies in Next.js 15: RSC vs SSR vs CSR 2. Rendering Strategies in Next.js 15: RSC vs SSR vs CSR Next.js 15 offers developers a granular rendering model that goes far beyond traditional page-level strategies. With For at blive et førsteklasses koncept er det vigtigt at forstå, hvordan de sammenligner med to velkendte modeller: og . React Server Components (RSC) Server-Side Rendering (SSR) Client-Side Rendering (CSR) While SSG (Static Site Generation) is still valuable in specific cases, it can be viewed as a built on top of SSR. In contrast, represent distinct runtime rendering paths, and understanding them is crucial for making performance- and architecture-aware decisions in 2025. caching strategy RSC vs SSR vs CSR 💡 Before We Compare: What Do We Mean by "Interactive Component"? In the context of React and Next.js, an is any UI element that . interactive component requires client-side JavaScript to respond to user input or browser events This includes (but is not limited to): af Buttons that update state on click Forms with validation or controlled inputs Dropdowns and modals that toggle open/closed Animations triggered by scrolling or hover Tabs, carousels, filters, sliders Components that use , , or useState useEffect useReducer If a component has , internal , or relies on the , it must run on the client. event handlers state DOM or browser APIs Interactivity = Browser-side behavior + JS event listeners + local state. Understanding this distinction helps clarify for at undgå at sende JavaScript til dele af brugergrænsefladen, der ikke behøver at være interaktive. why RSC exists Giver modeller på et kig Feature CSR (Client-Side Rendering) Servere Server Kunde JavaScript sent to browser ❌ None ✅ Yes ✅ Yes ❌ No ✅ Yes Når det løber On load in browser Ideal use case Static or data-bound views Personligt eller dynamisk UI Feature CSR (Client-Side Rendering) Feature Feature RSC (React Server Components) RSC (React Server Components) SSR (server side rendering) CSR (Client-Side Rendering) CSR (Client-Side Rendering) Servere Server Kunde Render location Giver placering Servere Servere Servere Server Kunde Client JavaScript sent to browser ❌ None ✅ Yes ✅ Yes JavaScript sent to browser JavaScript sent to browser ❌ None ❌ None ✅ Yes ✅ Yes ✅ Yes ✅ Yes ❌ No ✅ Yes Kræver hydrering ❌ No ❌ No Ja Ja ✅ Yes Interaktivitet Interactivity Nej Nej Fuld af ✅ Full Fuld af Adgang til serverressourcer Adgang til serverressourcer ✅ Direct ✅ Via getServerSideProps ✅ Via getServerSideProps ❌ Needs API calls Brug for API-opkald Når det løber On load in browser Når det løber Når det løber On-demand eller streamet Per request On load in browser On load in browser Ideel brug case Statisk eller databundet visning Ideal use case Ideel brug case Statisk eller databundet visning Statisk eller databundet visning Personalized or dynamic UI Personligt eller dynamisk UI Interaktive strømninger, lokalt UX Interactive flows, local UX 🔍 Think in Components, Not Just Pages In earlier versions of Next.js, rendering strategies were applied at the . You had , der Uanset hvad du vælger, anvendes . This made sense in a world where rendering happened all-or-nothing — either statically at build time, or dynamically on each request. page level getServerSideProps getStaticProps Hele siden But with and the directory introduced in Next.js 13+ and standardized in 15, . It becomes a that unlocks a new mindset. React Server Components (RSC) app/ rendering is no longer a top-down, one-size-fits-all decision per-component concern 🧠 A New Way of Thinking: Declarative and Composable Rendering This shift is more than an API change, it's a conceptual shift in how you architect your frontend. Declarative I stedet for at orchestrere and components are rendered manually, you now simply — React and Next.js take care of the rest. how where declare what each component does and what it needs You don’t manually wire up API endpoints or pass props from SSR to components. You can just write: // Server Component export default async function ProductInfo() { const product = await db.getProduct(slug) return <div>{product.name}</div> } This component: af af af Kører på serveren Sender ikke JS til kunden Kræver ikke noget getServerSideProps eller API-lag Is “just a component” — no extra abstraction needed You describe the UI and its data needs Og det er motorerne, der tæller resten. declaratively Composable Different parts of your UI can use different rendering strategies — , der , and . on the same page at the same time with minimal overhead For example: // Product page layout <ProductInfo /> // Server Component (no JS, rendered on the server) <AddToCartButton /> // Client Component (interactive) <SimilarProducts /> // Static Component (SSG with revalidation) Disse komponenter lever sammen i samme træ, men hver især: af af Runs in a different environment (server, client, build) Uses only the data and code it needs Skib præcis, hvad der kræves af browseren - ikke mere, ikke mindre For at gøre dette mere konkret, har jeg skabt en that showcases how different rendering strategies can coexist on a single page. minimal demo 3. How React Server Components Work Under the Hood 3. How React Server Components Work Under the Hood React Server Components (RSC) er mere end blot en ny renderingsstrategi, de ændrer grundlæggende, hvordan komponenttræer er bygget, renderet og overført. and how it impacts the boundaries of state, interactivity, and data. how it works behind the scenes 🧱 Server/Client Boundary: A Split React Tree React applications using RSC are no longer fully rendered on the client. Instead, the : component tree is split into two worlds af Serverkomponenter: Kør kun på serveren. Der sendes aldrig JavaScript til browseren. Kan ikke holde lokal tilstand eller vedhæfte hørere af begivenheder. Perfekt til rendering af statisk indhold og serverbaseret logik (f.eks. : Must be explicitly marked with . These are compiled into browser-friendly JavaScript and support full interactivity, local state, , and event handling. Client Components "use client" useEffect At build or runtime, React constructs a tree where server and client components coexist and stitches them together during render. 📍 What Faktisk gør "use client" When you add til en fil, markerer det, at hele modulet og dets eksporter som Bag kulisserne instruerer dette Next.js build pipeline til: "use client" client-only af af Kompilere filen (og dens afhængigheder) til en separat JavaScript bundle Exclude that component from being run on the server Treat it like a classic React CSR component with hydration logic Dette direktiv fungerer som en between the two sides of the tree. All components above it can be server-rendered; all components below it must be rendered in the browser. boundary marker 💧 Streaming: Rendering in Pieces, Not All at Once RSC embraces as a native rendering strategy. Instead of waiting for the full React tree to be built before sending it to the browser, the server til kunden, når de er klar. streaming streams serialized fragments af af Serverkomponenter renderes og sendes så hurtigt som muligt Stedholdere (f.eks. via <Suspense>) udfylder midlertidigt Client-komponenter hydrerer gradvist, kun når de oplades ✅ How is this possible? RSC introduces a concept called selective hydration. When a Client Component is rendered within a Server Component tree, React inserts a placeholder (<div data-rsc-placeholder />) and defers hydration. Once the client has loaded the corresponding JS bundle: af af af React lazily indlæser den specifikke komponent Finds the placeholder and stitches it into the live tree Hydrates it in isolation, without re-rendering the entire page This design is Din app starter hurtigt, og interaktiviteten kommer gradvist online. decoupled and progressive <Suspense fallback={<LoadingDetails />}> <ProductDetails /> // Server Component </Suspense> <AddToCartButton /> // Client Component (hydrated later) ️ Data Fetching og Code Splitting i RSC Another key “magic” of RSC: — without relying on , , or manual prop-passing. you can fetch data directly inside components with async/await getServerSideProps useEffect // Server Component export default async function Dashboard() { const stats = await getStatsForUser() return <StatsView data={stats} /> } Hvorfor er det muligt? RSC components , not as client-compiled modules run as real server functions They can access , or anything your server runtime supports databases, internal APIs, file systems The result is rendered HTML (not JS) and streamed to the client Also: af af , since the result is static No hydration needed in the component itself — everything resolves before it hits the browser No loading UI logic — unless nested inside a client boundary No code for this component is sent to the client Dette reducerer boilerplade- og bundtstørrelsen betydeligt, samtidig med at logikken holdes kollokeret med brugergrænsefladen – et langvarigt React-mål, der endelig blev realiseret i skala. 🚫 State, Hooks, and Lifecycle Considerations RSC Traditionelle hooks som , der eller , because they af . does not support useState useEffect useRef don’t run in the browser useState useEffect ❌ ✅ af useContext ✅ (hvis det er statisk) af async / vente (skal indpakkes i effekter) Event handlers ❌ ✅ useState Brug af kontekst Event handlers ❌ ✅ Funktioner Funktioner Server Component Server Component Client Component Brug af Brug af useState useEffect useEffect ❌ ❌ ✅ Brug af kontekst Brug af kontekst useContext ✅ (if static) async/await ❌ (should wrap in effects) Event handlers ❌ ✅ Event handlers Event handlers ❌ ❌ ✅ This enforces a clean separation of responsibilities: af Serverkomponenter: data og layout Client Components: interactivity and local state React Server Components are designed to simplify your app. Once you internalize the boundary rules, the streaming model, and async data access, you can with far less boilerplate than before. compose fast, personalized, and minimal-JS apps 4. What’s the Best Practice? Combining RSC, SSR, and SSG 4. What’s the Best Practice? Combining RSC, SSR, and SSG One of the most common questions React engineers face in Next.js 15 isn’t “should I use RSC?” — it’s “how do I combine RSC with SSR and SSG in a maintainable, high-performance way?” The beauty of Next.js 15 is that you’re no longer limited to one rendering strategy per page. Instead, you can now , applying the most appropriate approach to each part of the UI. compose rendering strategies at the component level This section introduces a practical framework for making that decision based on actual architectural needs. 🧭 Start with the Core Question: What does this component need? Ask these four questions for every component: af af af af Does it need to be interactive? ✅ Yes → Use a Client Component Har det brug for sikre, anmodningsspecifikke eller realtidsdata? ✅ Ja → Overvej SSR Can it be precomputed or infrequently updated? ✅ Yes → Prefer SSG Does it fetch server data but never need to run on the client? ✅ Yes → Use RSC Eksempel: Produktside Strategi nedbrydning Here’s how a typical e-commerce prduct page might be composed using all three strategies: Component af Rendering Strategy Årsagen PriceWithPersonalization SSR af Depends on user session, dynamic per request RelatedProducts SSG (with ISR) Safe to cache at build-time, can revalidate every 24h or per tag StockStatusBanner RSC + streaming Frequently changing, streamed in with Suspense to not block TTFB Component Rendering Strategy PriceWithPersonalization SSR RelatedProducts Safe to cache at build-time, can revalidate every 24h or per tag StockStatusBanner RSC + streaming Frequently changing, streamed in with Suspense to not block TTFB Component Rendering Strategy Component Component Rendering Strategy Rendering Strategy Reason ProductDetails ProductDetails RSC RSC Hentet fra DB, ingen interaktivitet, ingen behov for at hydrere PriceWithPersonalization SSR PriceWithPersonalization PriceWithPersonalization SSR SSR Depends on user session, dynamic per request Depends on user session, dynamic per request TilføjCartButton AddToCartButton af CSR CSR Requires interactivity and local state Requires interactivity and local state RelatedProducts Safe to cache at build-time, can revalidate every 24h or per tag RelatedProducts RelatedProducts SSG (with ISR) SSG (with ISR) Safe to cache at build-time, can revalidate every 24h or per tag Sikker til cache ved opbygning, kan genvalideres hver 24. time eller pr. tag StockStatusBanner RSC + streaming Frequently changing, streamed in with Suspense to not block TTFB StockStatusBanner StockStatusBanner RSC + streaming RSC + streaming Frequently changing, streamed in with Suspense to not block TTFB Frequently changing, streamed in with Suspense to not block TTFB Alle komponenter gør — no more, no less. No full-page hydration, no global data fetching, no unnecessary JavaScript. just what it needs to do 📐 Design Best Practices for Combining Strategies ✅ 1. Start Server-First Design every component as a Server Component by default. Opt into interactivity ( ) only when necessary. This keeps bundles smaller and simplifies testing. "use client" ✅ 2. Keep boundaries clear Use folder naming or filename suffixes to make boundaries explicit: /components /server/ProductDetails.tsx /client/AddToCartButton.tsx /shared/ReviewStars.tsx ✅ 3. Embrace Suspense for progressive delivery Brug af to stream in non-critical RSCs without blocking the whole page: <Suspense> <Suspense fallback={<LoadingReviews />}> <ReviewList /> </Suspense> ✅ 4. Co-locate logic with components Del ikke data-fetching og brugergrænseflade mellem filer, medmindre det er nødvendigt. logic directly inside the component tree — the framework takes care of the rest. async Brug ISR (Incremental Static Regeneration) smart For cacheable, high-traffic pages like blog articles or marketing sections, use SSG + revalidation: export const revalidate = 3600 // regenerate every hour ⚠️ Common Mistakes to Avoid af ❌ by default — you’ll end up with CSR all over again Using "use client" ❌ Fetching data in client components when it could be server-fetched ❌ — instead, let client components be focused, isolated, and stateful Passing too much data between RSC and client components via props ❌ logic inside RSC — no need, RSC server-side Recreating SSR-style getServerSideProps is ✅ Decision Tree Summary Here’s a simplified guide: Is it interactive? │ ├── Yes → Client Component (CSR) │ └── No │ ├── Needs per-request data? → SSR │ ├── Can be pre-rendered? → SSG │ └── Otherwise → RSC You don’t need to memorize it. Once you internalize how rendering maps to responsibility, . the decisions become intuitive The best practice isn’t about picking “the best rendering strategy.” It’s about — with clarity, purpose, and performance in mind. designing rendering as an intentional part of your component architecture 6. Looking Ahead: Why RSC Is More Than Just a Feature 6. Looking Ahead: Why RSC Is More Than Just a Feature React Server Components are not just a performance optimization or a DX enhancement — . Much like React Hooks in 2019, RSC in 2025 is . they represent a foundational shift in how we build React applications redefining the baseline for frontend architecture 🧠 RSC Changes the Mental Model of Building in React Traditional React development was always built on this assumption: “The browser owns the runtime. We hydrate everything. Every piece of logic and data must live in the client, or be fetched via API.” RSC breaks that assumption. Med RSC spørger du nu: af Can I skip hydration entirely? Can this component run purely on the server? Can I colocate backend logic with my UI? Det giver os tilbage Ikke med træk og træk, men med . the ability to separate display logic and interactivity cleanly first-class architectural boundaries It’s no longer “client-first.” It’s “purpose-first.” Each part of your UI exists where it’s most efficient — server, client, or static. 🌐 Ecosystem Shift Toward Server-First Rendering RSC isn’t happening in isolation. The broader frontend ecosystem is undergoing a . server-first rendering renaissance Frameworks like: af af Remix læner stærkt ind i serverdataindlæsning og formularhandlinger. embraces zero-JS by default, shipping only islands of interactivity. Astro Qwik tager hydrering til det yderste - udskyder alle JS indtil det udtrykkeligt er nødvendigt. , with RSC and App Router, now puts of the developer experience. Next.js 15 per-component rendering at the center This isn’t a coincidence. It’s a reflection of a hard truth we’ve all felt: Sending less JavaScript is the only way to scale interactivity and performance on the modern web. React Server Components are the React-native answer to that challenge — deeply integrated, ergonomic, and production-ready. 🔮 What to Expect Next The evolution is still ongoing. As React 19 and the ecosystem mature, we can expect: af af af More granular for RSC trees debugging and profiling tools to show boundaries and hydration timelines Better DevTools integration to abstract rendering strategy (e.g., , wrappers) Higher-order patterns <ServerOnly> <DeferredClient> Broader adoption in design systems, frameworks, and libraries (e.g., RSC-aware UI kits) 💬 Enjoyed the read? If this article helped you think differently about React and Next.js for more deep dives Follow me on Hackerne Hackerne at chatte om React, arkitektur eller RSC migration Or connect with me on LinkedIn LinkedIn
