Next.js provides an inbuilt next/image component that we can use in place of the native component. Maybe you want to cache the pages for a week, but refetch the data automatically on page load if it's older than a day? To prove that we still have the option to do data fetching on the client, if desired, open up pages/csr.tsx and visit http://localhost:3000/csr. You can see that this file functions exactly the same as ssg.tsx, except that Next.js passes in the page props on every request since were using getServerSideProps() instead of getStaticProps(). This function calls initializeApollo() to get an instance of Apollo Client that has Apollos cache data added to it. Per Apollo Clients getting started documentation, the @apollo/client and graphql NPM are already installed. Well use that same approach for our purposes, except the code examples will be written in TypeScript rather than JS, and all the data fetching examples will be specific to WordPress and WPGraphQL. This is a two-step process: 1) resize the image to a smaller size and 2) save it in the correct format (jpeg is better for photos; png is better for graphics). Ive confirmed that PMs are enabled for your forum login. As we've seen, there are a variety of different techniques for data caching in Next.js, and it can be a bit tricky to know which one to use when. You can set the cache time of the page itself decently high to avoid having to re-render pages on the server, but configure the staleTime of the queries lower to make sure data is refetched in the background as soon as a user visits the page. Your weekly dose of JavaScript news. We need a unique slug in the URL to identify which blog post we're looking at. Before setting up cache rehydration, fulfill the following prerequisites: Server-side Rendering (SSR) through the Apollo client follows this approach: Although using the SSR approach works well with Next.js, the recommended way to do Apollo Client cache rehydration differs from that. It's also not ideal for our comments, which come from an API, because they don't have to be loaded on the server-side for any reason. Existence of a negative eigenvalues for a certain symmetric matrix, Laymen's description of "modals" to clients. When the revalidate time is up, it will build the page and cache it for the *next* request. Fortunately, developers can follow a number of best practices to improve the speed of their Next.js applications. One of the reasons why Next.js has become such a popular framework for building React-based websites is that it provides so many different ways to load data from outside sources. Press question mark to learn the rest of the keyboard shortcuts. Like before, our getStaticProps will keep our page cached. And is there any way around this? 2020 Tanner Linsley. All rights reserved. Using the next/image component, you can add a blurred placeholder for any image using the placeholder prop. Next.js is the React framework by Vercel. How do I check if an element is hidden in jQuery? How did this note help previous owner of this old film camera? With GSSP, normally the client has to wait for the server to build the page on every request. Next.js has built-in caching so pages load faster. That's because Next.js needs to ensure that they parse the rewrites on the client and collect any params after hydration so that they can be provided in router.query. Connect and share knowledge within a single location that is structured and easy to search. How can I remove a specific item from an array? So, the user always receives a cached version (and the associated performance boost). Caching improves response times and reduces bandwidth usage by serving content from a cache instead of the original source. We'll just deal with the data here, but we would want to use the props.post in our page component to display the data (a full example is available in the Prismic docs). That client never has to wait for the server to build the page. We set Apollo Clients ssrMode option to true if the code is running on the server, and to false if its running on the client. Which data-fetching approach would be best to use here? But, remember that getStaticProps is only being run once at build-time. Clicking this button results in Apollo Clients fetchMore() function being called, which fires off a network request to get the next five posts and appends them to the list. We confirmed with the devs and yes, its not possible to set a custom cache control headers because it will cause weird issues especially when you re-deploy. Show that involves a character cloning his colleagues and making them into videogame characters? In a typical React app (without Next.js), our only option would be to use fetch (or a similar alternative) to trigger HTTP requests. Your email address will not be published. From React Query's perspective, these integrate in the same way, getStaticProps is shown below: The setup is minimal and this can be a quick solution for some cases, but there are a few tradeoffs to consider when compared to the full approach: React Query supports prefetching multiple queries on the server in Next.js and then dehydrating those queries to the queryClient. The blog.tsx page shows how you can fetch some data on the server to populate Apollos cache. View more. If you dont want to lazy load an image, set priority={true} to turn it off. It assumedly will only update when a site admin edits the text on the Content Management System (CMS). I guess it comes down to when you want to pay the cost of time to build. Because images are one of the biggest assets weighing down your apps performance, reducing the size of image files can improve performance. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. React Query supports two ways of prefetching data on the server and passing that to the queryClient. In this post, youll learn the nuts and bolts of integrating OAuth to protect resources like APIs. If a user never interacts with a particular component, that component will never be loaded. I feel like this could be better documented in the Netlify docs since this restriction isnt in place at other hosting platforms. A query is considered stale depending on when it was dataUpdatedAt. There's a catch if you're using Next.js' rewrites feature together with Automatic Static Optimization or getStaticProps: It will cause a second hydration by React Query. This does not happen with getStaticProps. Prismic offers an ideal solution to feature your e-commerce products in your promotional landing pages or inspirational content. The user has to wait and won't see anything until both the blog post and comments are loaded by the server. We can take all the logic related to comments and put it inside our CommentsList component. In Next.js, the getStaticProps function implements this behavior exactly. But, it is also inefficient. (instead of occupation of Japan, occupied Japan or Occupation-era Japan), Movie about robotic child seeking to wake his mother. Delivered every Monday to over 80,000 devs, for free. I do think so. Learn how your comment data is processed. [0], if (cacheHeader?.includes('stale-while-revalidate')) {, // Long-expiry TTL is basically no TTL, so we'll skip it, if (ttl > 0 && ttl < ONE_YEAR_IN_SECONDS) {. Instead of using the default
