![]() What exactly is a block pattern? The term can seem somewhat intimidating, but don’t worry, it’s very straightforward. Wrapping Up Our Guide to Block Patterns About WordPress Block Patterns.Using WordPress Pattern Block Templates.The preload function can also have any name as it's a pattern, not an API. With this approach, you don't have to pass promises down as props. You can optionally create a preload function to further optimize parallel data fetching. Preloading DataĪnother way to prevent waterfalls is to use the preload pattern. To improve the user experience, you can add a Suspense Boundary to break up the rendering work and show part of the result as soon as possible. If you have nested components, and each component fetches its own data, then data fetching will happen sequentially if those data requests are different (this doesn't apply to requests for the same data as they are automatically memoized).įor example, the Playlists component will only start fetching data once the Artist component has finished fetching data because Playlists depends on the artistID prop: This reduces client-server waterfalls and the total time it takes to load data. With parallel data fetching, requests in a route are eagerly initiated and will load data at the same time.However, this behavior can also be unintentional and lead to longer loading times. There may be cases where you want this pattern because one fetch depends on the result of the other, or you want a condition to be satisfied before the next fetch to save resources. With sequential data fetching, requests in a route are dependent on each other and therefore create waterfalls.When fetching data inside React components, you need to be aware of two data fetching patterns: Parallel and Sequential. To learn more about Streaming and Suspense, see the Loading UI and Streaming and Suspense pages. This means the user does not have to wait for the entire page to load before they can start interacting with it. With Server Components and nested layouts, you're able to instantly render parts of the page that do not specifically require data, and show a loading state for parts of the page that are fetching data. Streaming and Suspense are React features that allow you to progressively render and incrementally stream rendered units of the UI to the client. Good to know: This also applies to layouts, since it's not possible to pass data between a parent layout and its children. This is possible because fetch requests are automatically memoized. ![]() Instead, you can use fetch or React cache in the component that needs the data without worrying about the performance implications of making multiple requests for the same data. ![]() current user) in multiple components in a tree, you do not have to fetch data globally, nor forward props between components. You can fetch data on the server using Server Components, Route Handlers, and Server Actions. Depending on your region, data fetching can also happen closer to your data source, reducing latency and improving performance.Perform multiple data fetches with single round-trip instead of multiple individual requests on the client.This reduces both the back-and-forth communication between client and server, as well as the work on the main thread on the client. Fetch data and render in the same environment. ![]()
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