Vue Router Cache Component, The … In Vue 3, the Compositi

Vue Router Cache Component, The … In Vue 3, the Composition API offers a more flexible and powerful way to manage component logic. If the data does not change, there is no need to resend asynchronous request loading data … Automatically cache/destroy page components in your routes. You can also deduplicate fetch requests by using Next. Much like with Vuex, we will create the router on a test by test basis. 0 Summary This is difficult to explain, but hopefully the steps below will help you see the issue. There are a number of ways to hook into the route … The introduction of Vue's Composition API opened up new possibilities, but to be able to get the full potential out of Vue Router, we will need to use a few new functions to replace access to this and in … The official Router for Vue. When using vue-router to navigate in a larger SPA, keep-alive is a very nice way to keep views/components that are frequently visited in the … KeepAlive <KeepAlive> is a built-in component that allows us to conditionally cache component instances when dynamically switching between multiple components. It renders the component matched by a top level route. js. I looked at the local storage, cache storage, … Vue Navigation This guide covers how routing works in an app built with Ionic and Vue. jsNav is just a regular component UserSettings is the parent view component UserEmailsSubscriptions, UserProfile, UserProfilePreview are nested view components Note: Let's … Vue. Vue will only trigger the … Learn how to boost Vue. <router-view v-slot = "{ Component }"> <component :is="Component" /> </ router-view> The official Router for Vue. Each <router-link> is a tab and the space below is the <router-view>. const routes = [{ path : '/', name: 'home', component: Home }, { path : '/signin Actually, I don't see why we should cache component's lifecycle in rendering. 2 package - Last release 1. Many pages needs to be loaded only once but some specific pages need to be … Storing the response data in the "data" member of each component does not work as the components get recreated when navigating through the pages using vue-router. User can change … vue-router-dynamic-cache、vue路由组件动态缓存、vue路由组件前进重新加载，后退不刷新. js yourself! It all started creating a basic router from scratch, but hey, the router is component based, uses the … The official Router for Vue. They only register a new route, meaning that if the newly added route matches the current location, it … Minimal impact on client bundle size Component must have a name in order to be cacheable The RenderCacheable component is a wrapper for cacheable Vue components. 0的缓存机制，并探讨如何通过合 … In Vue Router 4, you can use in-component guards to run specific logic when a route change occurs while the user is viewing a particular component. This allows you to leverage the component nesting without having to use a nested URL. We’ll use vue-keep-scroll-position package to assist in … Using the built-in <KeepAlive> component to make the components keep the previously entered user inputs: See more examples below. js, including URL routing and handling navigation between components effectively. In this post we'll look at how we can use Vue 3's composition API to leverage the stale-while-revalidate technique in data fetching. 8 +, react router 4 + can be used to cache page components, similar to Vue keepalive package Vue router effect function. Very often we will need to map routes with the given pattern to the same component. A free, fast, and reliable CDN for vue2-router-cache. js application by implementing user authentication, including user login, logout, and sign-up, along with protecting Vue. 2, last published: a month ago. vue component with all the classes: Learn how to redirect to another page in Vue. js Let's implement a caching pattern called stale-while-revalidate, or SWR, with Vue. This creates suboptimal user experiences in common scenarios: Problem Case: User loads a paginated list (Page 1) Navigates to … In Vue Router, use it keep-alive When cache routing components, make sure that each routing component has one unique name property. But you'll notice that, when using it alongside … From the include description, I found that include can be used to clear the cache, the method is: add the component name to include, and the component will be cached; Remove the … Check React-router-cache-route 1. js 3 堆栈式 Keep-Alive 组件，路由缓存自动管理工具 - Zippowxk/stack-keep-alive The official Router for Vue. You can read more about this in the Dynamic … Vue. Since … The official Router for Vue. We’ll use vue-keep-scroll-position package to assist in remembering … If you choose to install Vue Router, the example application will also demonstrate some of Vue Router's core features. Vue will only trigger the factory function when the component … Additionally, the Vue Router documentation should include information about potential issues with deployments and cached components in the lazy-loading routes section. In … Extend vue2 keep-alive and router-view, add the function of automatically judging whether to use the cache. This allows you to use the component anywhere, which makes the component easier to reuse and test. 6 with component-level caching : 260 ms - 28 req/s Vue 3 without component-level caching: 1230 ms - 11 … I have app where user can login in different roles, eg. Vue. seller, buyer and admin. How do you deal with this? I've …. 6 without component-level caching : 1680 ms - 7 req/s Vue 2. Writing the Test Let's look at … Learn how to compose Vue layouts using Vue Router. push or router. js - The Progressive JavaScript FrameworkFor applications using Vue Router, it is strongly recommended to use lazy loading for route components. Without reloading the entire … Learn how to optimize your Vue. Improve performance and speed up your web app today! RouterView is a functional component defined in $1 that serves as the rendering outlet for route-matched components. addRoute() and router. js app and explore practical solutions to enhance speed and efficiency for a better user … To cache routes we enclose <router-view></router-view> with keep-alive. … The <router-view> here is a top-level router-view. js applications with lazy loading and caching techniques. Explore the power of the KeepAlive component in Vue. In the hook, you call this. using Tailwind CSS, you could create a NavLink. js core to make building Single Page Applications with Vue. js 2 application that has a dynamic tabs mechanism. g. e. router. jsThe RouterView component exposes a slot that can be used to render the route component: To make that easier, Vue allows you to define your component as a factory function that asynchronously resolves your component definition. Extend vue3 keep-alive and router-view, add the function of automatically judging whether to use the cache. … KeepAlive is a in-built Vue component that helps cache other components in memory, reducing unnecessary DOM re-renders and improving … My question is similar to the one listed here: Vue. So instead I tried to use the keep-alive on the router-view, and then directly include the NamedModule component I want to cache, like so (I'm using script setup so specified the file … Request memoization is scoped to the lifetime of a request. Users can interact with the application opening and closing tabs, each tab represents a route. The Vue page loads the default to enter the Vue-Router nested sub-routing, and uses Keep-Alive to cache the component need: There are 2 sub -components under the home component: news, Products. params will … The routing system in Vue is an essential tool for building modern and interactive web applications. Instead of using regular <a> tags, we use the custom component RouterLink to … vue-router documentation states the following The component (and components) option accepts a function that returns a Promise of a component and Vue Router will only fetch it … router-view 缓存 完整代码分支 stage-5 熟悉 vue 的都知道我们可以通过 keep-alive 来缓存 router-view 如： The component specified in the component option is rendered by the <router-view /> in our application. 8 +, react router 4 + can be used to cache page components, similar to Vue keepalive package Vue … I have a Vue component that's kept alive using Vue's element for caching purposes. To achieve … Vue core technology-38, vue-router-cache routing component, Programmer Sought, the best programmer technical posts sharing site. Para mais … a cache and manage vue-router with single case or multiple cases mode plugin Vue Router 提供了 children 設定，可以讓我們完成這樣的層級結構。 它的處理方式也是在 component 裡面設置 <router-view>，提供給 Router … As the name suggests, the navigation guards provided by Vue router are primarily used to guard navigations either by redirecting it or canceling it. Para se construir uma Single Page Application, um dos componentes essenciais é o Router, e no caso do Vue seria o Vue-Router. Start using vue-router-dynamic-cache in your project by … The react cache component developed based on react 16. js The react cache component developed based on react 16. Basic Usage In the Component … Details When wrapped around a dynamic component, <KeepAlive> caches the inactive component instances without destroying them. This is a great way to improve initial page loads as our app will be loaded in smaller … Dynamic routing is achieved mainly via two functions: router. The keep-alive component caches the state of the component. 13. x. 9 Vue 3 For those that ended up here like me looking at why I'm not getting unmounted called on a component inside a page, when route changes, here's some guidance: Let's … The HandleCache component plays a crucial role in cache busting by managing loading states, checking for the latest version, and … As users navigate around the application, the URL updates accordingly, but the page doesn't need to be reloaded from the server. You can use vite-app-pro cli to … Spread the love Related Posts Creating Async Vue ComponentsVue. I noticed, that the IonRouterOutlet component is caching visited pages. js的开发过程中，Vue Router作为前端路由管理器，其缓存机制对于优化页面加载速度和提升用户体验至关重要。 本文将深入解析Vue Router 2. It gives us the opportunity to display a … 单例提供管理缓存的api方法,这些方法的参数和vue-router的push方法的参数一致,这样做保证了代码的可读性 支持嵌套路由 (嵌套路由请在最里层 … Vue Router series (10) cache routing component, Programmer All, we have been working hard to make a technical sharing website that all programmers love. js routes. jsVue Router is the official router for Vue. reload() Reload with current path and call data hook again But when I try issuing the following command from a Vue component KeepAlive 是 Vue. It gives us the opportunity to display a loading … Dynamic routing is achieved mainly via two functions: router. js loading times and improve performance with this comprehensive step-by-step guide. It deeply integrates with Vue. 3. Always when I switch between my routes, a new instance of the component is created. The trick you will earn today could dramatically decrease your … Learn how to use Vue Router 4 with Vue. There are 59 other projects in the npm registry using react-router-cache-route. This component is then cached and … vue-local-storage vue-reactive-storage vue2-storage Wrapping Up While the browser will never replace a server persistence system, having multiple ways to … I've created a small app that consists of two main components and I am using vue router to route between components. The … TIP For the sake of simplicity, all route records are omitting the component property to focus on the path value. Note: this feature only works if the browser supports history. push and all the other navigation methods return a Promise that allows us to wait till the … So, by switching from slug article-a to article-b, the router sees a match for the article route and sends back the Article component that's already been cached with Article A's content. jsThis template is using two components provided by Vue Router, RouterLink and RouterView. Latest version: 1. The same rules apply for the to property of the router-link component. It facilitates navigation between … Quick Overview CJY0208/react-router-cache-route is a React library that extends react-router to provide route caching functionality. vue are child routes of two … <KeepAlive> is a built-in component that allows us to conditionally cache component instances when dynamically switching between multiple … a cache and manage vue-router with single case or multiple cases mode plugin. matched Array. Features include: Nested … DevTools This package provides built-in DevTools in the form of a Vue component. This means you should NOT cache a component when: It has child components that may rely on global state. js a breeze. this. [Vue] Vue-Router cache routing component Cache routing component Function: Keep the unwanted routing components mount without being destroyed pass<keep-alive> ··· </keep-alive>The … In practice, you might want to use your AppLink component for different parts of your application. As you can see, … To make that easier, Vue allows you to define your component as a factory function that asynchronously resolves your component definition. We could loop through that array to check all meta … If you've reached this point, that means you've built a router in Vue. It uses Vue's dependency injection system to access routing … Vue Router is the official router for Vue. pushState. jsNav is just a regular component UserSettings is the parent view component UserEmailsSubscriptions, UserProfile, UserProfilePreview are nested view components Note: Let's … Just like the v-if directive, vue-router removes elements from the virtual DOM and replaces those with new elements when a user navigates around your application. When adding Vue Router to the mix, all we need to do … The official Router for Vue. common['Cache-Control'] = 'no-cache, no-store, … Discover expert routing techniques and best practices for Vue. Specifically, this is my blog: When I request data by router to blog detail with 1, 3, 4, I have response data. headers. However, the problem I am having right now is that once I sign out of one account and create a new … reLaunch: Clear all cached components when jumping, and then cache the page component again Others (including system return) are all backwards, and the page component will be destroyed when … Vue. The IonRouterOutlet component uses the popular Vue Router library under … The official Router for Vue. 2 - a JavaScript package on npm - Libraries. Master smooth navigation in your Vue apps. Vue, dynamically determine whether the current component needs to be cached by the cache route array in Vuex In some cases, … 在当今的前端开发中，Vue3及其路由管理器Vue Router已经成为构建复杂单页面应用（SPA）的基石。 Vue3 Router不仅在页面导航中扮演 … 阐述 Vue Router 中路由缓存 (Router Cache) 的策略，以及它与 keep-alive 的区别和联系。 大家好，我是老码，今天来给大家聊聊 Vue Router 里的缓存那些事儿！ vue 2 router view cache component - 1. It allows developers to cache route components, preserving their state … Start using react-router-cache-route in your project by running `npm i react-router-cache-route`. How can I get the currently cached components? vue2 router view cache component. push, the exact same rules apply to both of them. js, we are already composing our application with components. The problem occurs when I navigate to another page and get back to the same D3 component but with … I created an app with vue-cli and then I build the dist folder for production. js applicationI think what the person above is showing, is that the Vite compilation process appends a unique string … The official router for Vue. When we route switch, the corresponding components will be recreated, and the data will continue to reload. js 提供的一个内置组件，用于缓存动态组件的状态，提升性能和用户体验。 Currently, caches components unconditionally when used with . Learn how to optimize your Vue. First component is called MoviesList and the second one is … Learn how to optimize routing performance of your Vue application. How can I programmatically destroy a cached … The component (and components) option accepts a function that returns a Promise of a component and Vue Router will only fetch it when entering the page for the first time, then use … The Lifecycle of Components Cached with <KeepAlive> Components that are cached with the built-in <KeepAlive> component will switch between the activated and deactivated states when they are set, … Learn about Vue Keep-Alive, a Vue feature that caches inactive components for improved performance and seamless user experience. 6k次，点赞11次，收藏17次。本文介绍了如何在Vue3应用中设置全局缓存策略，包括使用Pinia管理缓存数据，设置路由守卫确保组件缓存，以及通 … Vue 2. In React, there isn’t a built-in KeepAlive component like the keep-alive feature in Vue. Use VueQueryDevTools component in the main … Vue’s <keep-alive> component can help cache components when navigating between routes. For each user I'd like to show dashboard page on the same path, eg. Component caching … Learn how to efficiently re-render Vue components without reloading the entire page by exploring use cases and best practices for forcing … I have issue with having keep-alive actually keeping components alive. Start using vue-router-cache in your project by running `npm i vue-router … The official Router for Vue. js - The Progressive JavaScript FrameworkRouting Official Router For most Single Page Applications, it’s recommended to use the officially-supported vue-router library. 0. It renders as an <a> tag with correct … Overview KeepAlive is a built-in component in Vue, which is used to cache components in memory to prevent redundant DOM rendering, … 1、使用Vue Router的动态路由配置，2、利用keep-alive组件，3、手动清除缓存，4、使用版本号控制缓存，5、配置HTTP缓存头。 这些方 … TIP Vue components are compiled differently when used for SSR - templates are compiled into string concatenations instead of Virtual DOM render functions for … As mentioned in Installation section, @vue-storefront/cache module provides option to create invalidation endpoint. Lets say that your route fetches data, and inserts it into component props. KeepAlive component, provide a new prop named cache, then user can v-bind to createKeepAliveCache() returned KeepAliveCache object. Boolean mode When props is set to true, the route. $destroy(); which removes the component under cache when it's not used. js’ Data Cache, for … Creating a Single-page Application with Vue + Vue Router feels natural: with Vue. vue. Para a maioria das aplicações de página única, é recomendado usar a biblioteca Vue Router suportada oficialmente. js - The Progressive JavaScript FrameworkThe resulting AsyncComp is a wrapper component that only calls the loader function when it is actually rendered on the page. It works seamlessly with Vue Router, … I have a fairly large vue. Refresh forward, go back to keep the previous page and keep the cache. replace as the … Check Vue-router-dynamic-cache 1. For example, we may have a User component which should be rendered for all users but with different user IDs. 基于实现类似vue的keep-alive功能的react-router缓存功能. 0, last published: a year ago. vue 2 router view cache component 用过vue的同学肯定对keep-alive组件不陌生，它允许我们使用key对组件进行缓存，当使用相同key的组件渲染时，就会使用缓存中的组件，这样可以加快渲染速度，特别是在使用路 … 通过 vue3. Vue-router Cache Routing Components, Programmer Sought, the best programmer technical posts sharing site. It allows you to cache … I have one auth component that I am using both in the login and the signup route. Another way is by using the deactivated hook on the components you don't want to keep cached. How can I cache it and then I re … Learn how to pass props to route components in Vue Router. [Vue] Vue-Router cache routing component, Programmer Sought, the best programmer technical posts sharing site. This means that the state of a component is preserved, reducing loading times and … Vue3 ts setup The keepAlive cache route component is invalid There was a problem when I used the vue3,vite,ts technology stack in my … As the name suggests, the navigation guards provided by Vue router are primarily used to guard navigations either by redirecting it or canceling it. In addition, it will pass along … Problem is when I change tabs, I push the path to the router but even with keep-alive the pages are reloading when I switch from a tab to another (I tried to log both in the onMounted hooks of the … This does not help if you need to actually re-trigger the route, and it's guards. 0 with ISC licence at our NPM packages aggregator and search engine. we’ll cover in this … Learn how to master browser cache to improve the performance of your Vue. js - The Progressive JavaScript FrameworkOverview Here is a high level overview of what has changed: New defineAsyncComponent helper method that explicitly defines async components … Disable cache for my vue. You can use vite-app-pro cli to … I have VUE app which uses keep-alive method in the router. http. The built-in <KeepAlive> component is used around dynamic … Overview KeepAlive is a built-in component in Vue, which … I try to use the router-view slot and keep-alive to cache the route components as written in the documentation: The component (and components) option accepts a function that returns a Promise of a component and Vue Router will only fetch it when entering the page for the first time, then use the cached version. js Using Vue 3’s defineAsyncComponent feature lets us lazy load components. removeRoute(). js - Destroy a cached component from keep alive I am also creating a sort of Tab System using the Vue router so the code looks like … Installation, Folder Structure, Router Object Properties, Query and Parameter Access, Navigation, And More. js / vue-router versions 2. $router. These methods update the cache and notify components to re-render. Because each integration may pass data in a different format or multiple … Two Index. The app is deployed on IIS with flask backend and works fine. jsNote that nested paths that start with / will be treated as root paths. vue, and I wrote keep-alive in App. Example of routing configuration: The official Router for Vue. jsInitial navigation and transitions Usually, enter animations are ignored by Vue's <Transition> unless we add the appear prop. js components Use vue-router to write integration tests for client-side routing Use vuex to write integration tests for … Route Caching Principle Route caching is implemented through the keep-alive component of vue-router. Ele faz todo… This plugin solves these issues through the BetterRouterView component with a more efficient solution Start using react-router-cache-route in your project by running `npm i react-router-cache-route`. js 3 stack type Keep-Alive component, routing cache automatic management tool. By utilizing both v-memo and … Vue router use keep-alive to cache certain components?I have started working with vue recently, and I have managed to create Fetching After Navigation When using this approach, we navigate and render the incoming component immediately, and fetch data in the component's created hook. For more details, … As Vue's API said: When wrapped around a dynamic component, <keep-alive> caches the inactive component instances without … 文章浏览阅读4. You configure routes to … The official Router for Vue. However, we can achieve similar functionality by… Learn the basics of Vue. The component should be rendered, its template should be cached as a string (the html part of the … I use vuejs3+typescript to build a background management system, and use keep-alive to cache pages. cache-route for react-router base on react v15+ and router v4+. When the component is visited again, … 在Vue中实现路由缓存的方法主要有两种：1、使用<keep-alive>组件，2、使用第三方插件如vue-router-cache。使用<keep-alive>组件是最常见和推荐的方法，因为它是Vue官方提供 … Master lazy loading Vue components and prefetching to optimize your app's performance with efficient loading strategies. http://localhost Vue-router Keep-Alive Cache Policy Keep-alive configuration in app. 2 with MIT licence at our NPM packages aggregator and search engine. vue2 router view cache component. Vue Router has explicit support for lazy … Alternatively, when we want to cache component instances, we can use the built-in Vue KeepAlive component. For example, … I found an issue in vue-router which triggers me a lot. This will let us have more fine grained control over the state of the application during the unit tests. Contribute to codeime/vue2-router-cache development by creating an account on GitHub. productionTip = false Vue. js components, a progressive JavaScript framework, including how to create and use them effectively. js 3 in this complete Vue Router guide. jsEach name must be unique across all routes. // create a new Vue instance const app = new Vue({ data: { cachedData: [] } }); // update the cached data Since the prop to accepts the same kind of object as router. io Learn how to secure a Vue. 0+, optionally provide onComplete and onAbort callbacks to router. . Learn how to reduce Vue. Push. It has child components that produces side effects on the render context. push (). jsOne thing to note when using routes with params is that when the user navigates from /users/johnny to /users/jolyne, the same component instance will be reused. Two of the tabs are the same component with different f <router-view></main-router-view> </keep-alive> The point is that over time when i switch from route to route all the components that have to be cached stay cached so i end up with … If you're starting a new project, you might find it easier to use the create-vue scaffolding tool, which creates a Vite-based project with the option to include Vue Router: The official Router for Vue. In order to cache routes we enclose <router-view></router-view> with keep-alive. import Vue from 'vue' import App from '. This looks like a nice feature in the first place. These are defined using the … 当用户在应用中浏览不同页面时，URL 会随之更新，但页面不需要从服务器重新加载。 Vue Router 基于 Vue 的组件系统构建，你可以通过配置 路由 来告诉 Vue Router 为每个 URL … Vue Router allows you to achieve these and even better, allows you to completely customize the scroll behavior on route navigation. I am aware of … I see in this pull request: Add a router. What is <keep-alive> <keep-alive> is a built-in Vue component that allows you to cache other components so that they don't get destroyed and … Testing and Debugging Testing Use jest to write unit tests for Vue. There can only be one active component instance as the direct … JSFiddles: With vue router With dynamic components So basically what I'm trying to achieve is to have the Base component generally cached but being able to re-create it when needed so that I can have … Hi! I am using Ionic vue and ionic vue router in version 6. 2. Inside a component, you can access the router using the $router property, e. /router' Vue. They only register a new route, meaning that if the newly added route matches the current location, it … The official router for Vue. js 3 to enhance your application's performance by maintaining component state and … API Reference <router-link> <router-link> is the component for enabling user navigation in a router-enabled app. js is an easy to use web app framework that we can use to … I am looking for information on where Vue stores the cached component data when a component is wrapped in the keep-alive component. Projects using package managers will typically use ES modules to access Vue Router, … The official Router for Vue. 的路由组件来实现 页面的缓存，这个就能方便实现，那些页面切换需要缓存，那些页面不用缓存。 有些页面数据需要显示最新的数据，所有就不缓存。有些页面 数据很久都 … Discover common performance pitfalls in your Vue. Contribute to wyf199605/react-cache-router development by creating an account on GitHub. 0 package - Last release 1. Vue Router is built on Vue's component system. js and Vue-Router to boost your application's performance and user experience. In 2. There are a number of ways to hook into the route … when use Vue-router,I want to control dynamicly cache with 'keep-alive' ,but It seems difficult to solve Navigate Using a Dynamic Component To understand routing in Vue, let's first look at an application that uses a dynamic component to switch between two … Vue. If you add the same name to multiple routes, the router will only keep the last one. Similarly, a rendered component can also contain its own, nested <router-view>. /App' import router from '. The Vue beforeDestroy() lifecycle … Fetching After Navigation When using this approach, we navigate and render the incoming component immediately, and fetch data in the component itself. Simple Routing from Scratch If you only need very simple routing and do not wish to involve a full-featured router library, you can do so with Dynamic … I'm using vue-router with a series of components like tabs. There are 58 other projects in the npm registry using react-router-cache-route. js - The Progressive JavaScript FrameworkInclude / Exclude デフォルトでは、 <KeepAlive> はコンポーネント内のどんなコンポーネントでもキャッシュしま … [back] Cache when back behavior occurs, corresponding to the POP action in react-router [always] Always cache routes when leave, no … 在Vue. All route records matched by a route are exposed on the route object (and also route objects in navigation guards) as the route. trueI face browser local cache issues every day, when i re-deploy my web-application, clients needs to refresh the browsers, so browser could fetch a new version of scripts. Explore best practices for Vue Router layouts to enhance app structure and scalability. The target location is specified with the to prop. 3, last published: 3 years ago. My issue is … I am developing a Vue3 application with a component that renders a D3 chart. Component that is being rendered in router-view have async fetching after component is mounted. 4 / 2. vue and Detail. Further the old instances are not … Route Params - Vue Router 4 with dynamic-router (forked) using core-js, vue, vue-router Unlock the full potential of Vue Router and build responsive, user-friendly SPAs faster. Improve performance and speed up your web app today! As pages tend to store a lot of datas, I would like to delete the according page component from the cache, as the user close the tab. js applications. vue files are the child routes of App. config. js app performance with caching and code splitting techniques in this step-by-step guide. … The component (and components) option accepts a function that returns a Promise of a component and Vue Router will only fetch it when entering the page for the first time, then use the cached version. (基 … A Vue está bem adaptada para construir aplicações de página única. If you're using the Composition API, the router is accessible by calling useRouter (). Start using react-router-cache-route in your … For more details, see Vue Router's documentation. It allows you to define routes and map them to components, enabling navigation between different views in your application. gxnoim uuqy vakzleg jpn mjgjccpf vjmdj xlgp cipb yinvuspr xbf