pronextjs.dev

ProNextJS The Next.js Router Cache Jack HerringtonJack Herrington The Next.js App Router features a built-in client-side cache, known as the router cache. The router cache is designed to make navigation between routes super efficient. When you visit a route in your Next.js app, the page content gets stored in the cache. If you revisit that same route later, the cached version will load instantly, resulting in a much smoother user experience. The Example Application [...] The Next.js App Router also has a cache on the client. It's called the router cache. And the idea of the router cache is that when you're navigating from route to route, that makes it really efficient. So if you jump back to a route where you've already been, it's already cache and you're already going to see the same page. Now normally, this isn't the kind of thing that trips folks up, but I have seen a few folks run into some issues with it. [...] Transcript The Next.js App Router also has a cache on the client. It's called the router cache. And the idea of the router cache is that when you're navigating from route to route, that makes it really efficient. So if you jump back to a route where you've already been, it's already cache and you're already going to see the same page. Now normally, this isn't the kind of thing that trips folks up, but I have seen a few folks run into some issues with it.

youtube.com

[0:39] say new feature, I hit enter, this data that is now shown on the page is being cached. Anytime [0:47] I make a mutation to this data, like uploading a feature or adding another new feature, the Next.js [0:55] App Router is able to revalidate that data. It's able to mutate the cache and update it with the latest features. So now, if I reload the page, I still see that we have our cache data on the page. [...] Next.js App Router Caching: Explained! Channel: Vercel 116K subscribers 3.4K likes Description 134,862 views Posted: 2024-01-15 Learn how to fetch, cache, and revalidate data using the Next.js App Router. [...] 0:00 – Introduction 0:24 – Demo 1:20 – Caching overview 2:06 – Foundations 6:10 – Static: fetch() 7:03 – Dynamic: fetch() without caching 7:37 – Static: unstable_cache() 9:37 – Dynamic: Direct database calls 10:07 – Revalidating static data 12:32 – Revalidating from external sources (webhooks) 14:12 – Revalidating static data with ISR 15:28 – React cache() 16:40 – App Router and Pages Router differences 17:52 – Example: Forms with useFormState & useFormStatus

blog.logrocket.com

Router cache The router cache stores all of the prefetched pages and pages visited by the user while navigating around the application in the browser. This caching applies to static and dynamic routes because the browser doesn’t care how the route was generated. The idea behind this cache is that having all the pages stored in memory allows for instant or almost instant navigation, giving the user the feel of a true single-page application with no hard reload. [...] Next.js offers multiple caching strategies, and by utilizing request memoization, data caches, full route caches, and router caches, developers can effectively manage how data is stored and retrieved, depending on whether it is user-specific, static, or dynamic. However, some caches, like router caches, may lead to stale data. In the next section, we discuss cache invalidation strategies to address possible issues that may arise. Next.js cache invalidation [...] In Next.js, caching is non-existent in development, only in production. This is one reason why it is a pain. The next-cache-toolbar is a great caching tool used in development to display cache information about pages. This tool is so comprehensive as it shows almost everything that needs to be known in a toolbar. In the toolbar, developers can see cache status, such as whether a page was generated using cached data or prefetched, the expiry time of the cached data, and more.

youtube.com

[1:31:16] get a 5-second stale time. After that, it will start fetching the page again on each visit. Now, if you frequently visit [1:31:24] a page, NexJS will assume it's no longer keeping it in the router cache. And that's basically the full control mechanism of Nex.js clientside router [1:31:34] cache. I hope it's now clear. This cache stays in the browser's in-memory storage. Naturally, if the user reloads [...] Next.js Caching & Rendering Tutorial – Full Course for Beginners Channel: freeCodeCamp.org (verified) 11.9M subscribers 2.2K likes Description 50,248 views Posted: 2025-08-13 Learn Next.js 15 Caching & Rendering using the App Router. This tutorial is designed for developers who want a clear, engineering-level understanding of how Next.js optimizes performance through smart rendering strategies and layered caching. 🔗 Code example: 🔗 Next.js Caching Documentation: [...] Transcript [0:00] Learn about Nex.js 15 caching and rendering using the app router. In this full course, you'll gain a clear engineering level understanding of how [0:07] Nex.js optimizes web performance through advanced rendering strategies and layered caching. This course covers the [0:15] different rendering methods which are SSG, SSR, ISR, and CSR. And you'll learn how React client and server components

nextjs.org

In a route with dynamic param segments, generateStaticParams prerenders the URLs you list at build time. Any other URL is served the App Shell instantly, then upgraded in the background with its now-known params and cached for the next visitor. See ISR with Cache Components for the full walkthrough. Bots and crawlers [...] This page is also available as Markdown: request this page's URL with an Accept: text/markdown header. For an index of Next.js documentation, see </docs/llms.txt>. App RouterGetting StartedCaching Copy page On this page Caching Last updated August 25, 2026 > This page covers caching with Cache Components, enabled by setting cacheComponents: true in your next.config.ts file. If you're not using Cache Components, see the Caching and Revalidating (Previous Model) guide. [...] Read the Instant navigation guide for examples and inspection tools. Prefetching With Partial Prefetching enabled, the router prefetches each route's App Shell by default. The App Shell includes static content and session data derived from cookies() and headers(). To also prefetch cached content that depends on a link's URL data, such as searchParams or dynamic params, set prefetch={true} on that link.