React Query Staletime, One of my requirements is to be able to check for an auth token in the check method of the auth provider, and I would like to be able to pass some react query options to the check method (mainly override the stale time and force the refetch on window focus) - Is there a way to do this? I can see the check query initialData: "Real" Data That Gets Cached This is treated as actual data that came from your API. This document provides a walkthrough of the example React application located in the `src/` directory. Use when building data fetching, caching 文章浏览阅读752次，点赞28次，收藏25次。本文深入探讨React Native应用中TanStack Query（原React Query）在OpenHarmony 6. If we know that the content is going to remain fresh for some time, we can configure the stale time in React Query. As long as the query is fresh, data will always be read from the cache only - no network request will happen! If the query is stale (which per default is: instantly), you will still get data from the cache, but a background refetch can happen under certain conditions. In React Query, two key options control the freshness and caching duration of query results: staleTime and gcTime (formerly cacheTime). Learn when to use them, how they differ, and practical examples to optimize your app. Inefficient data fetching can lead to unnecessary In React Query, the cacheTime and staleTime options impact how long data gets stored on the client and how often it's re-fetched from the server. It does not wait for 5 minutes which is what I was expecting. Jul 15, 2025 · 🤔 What is staleTime ? By default, React Query considers data stale immediately after it’s fetched. The demo application serves as a practical reference implementation that demonstrates how to inte React Query maintains a normalized cache of query results identified by query keys. Jan 22, 2025 · React Query’s caching and fetching mechanisms are incredibly powerful, but they require careful handling to avoid stale data issues. Still, I do not understand how to use staleTime & cacheTime for data caching. I am specifying the stale time as 5 minutes as given below. Jan 24, 2021 · why react query set default time at cacheTime to five minutes and staleTime to 0 second? and where react query save cache data at computer? cache memory or disk memory? @tanstack/react-query's useQuery provides a production-grade solution for all of these. It covers query patterns, mutation strategies, caching, optimistic updates, Out of the box, TanStack Query is configured with aggressive but sane defaults. Initial data allows you to provide initial data to your components before the data has been fetched from the server. You set the staleTime to infinite, which means that the result is never considered stale, but the moment you leave the page that uses the result and the cache time expires (which is 5 minutes by I absolutely loved React Query and the way it separates server state from everything else. It gets stored in the cache and affects query states: function useUserProfile(userId) { return useQuery({ queryKey: ['user', userId], queryFn: Performance optimization is crucial in React applications, especially when dealing with API requests. Hi, the caching of access control provider does not seem to work. const { dataGridProps, filters, setFilters, setCurrent 📌 Understanding staleTime & gcTime in React Query (Finally clicked for me) While working with React Query, I kept seeing staleTime and gcTime and honestly… I was using them without fully Decoding React Query: The Full Architectural Journey from Hook to Render If you've spent Tagged with react, webdev. From my testing, the function runs whenever the query changes (state, etc) and so this staleTime function will run before the query runs the first time. However every time I navigate to the page containing grid component, I can see React Query firing a query to refresh the cache. Jul 1, 2022 · I have read React Query docs. If useQuery and useMutation are the interface, then QueryClient is the brain that powers Tagged with javascript, react, tutorial, webdev. I was trying to implement react query into one of the projects at work, but I'm struggling with understand staleTime functionality and dynamic queryKeys. Sometimes these defaults can catch new users off guard or make learning/debugging difficult if they are unknown by the u This document describes the frontend data fetching and state management architecture using TanStack Query (React Query) v5. I want to fetch data for specific Producer or Category with dynamic queryKey, but if I set staleTime to Infinity than nothing changes, and if staleTime is 0 than data is fetching everytime. By default, React Query sets this value to 0. 0 means the query will not keep the initialData (if set) for any time, and will immediately run. grp_title, queryParams, groupCohortIds] Query Function: Determines endpoint based on context (personal vs organization) Cache Configuration: staleTime: 300_000 (5 minutes), refetchOnWindowFocus: false Conditional Fetching: enabled flag based on user context React-Query (4 Part Series) 1 What the heck is React-Query? 2 React Query : staleTime vs cacheTime 3 Fetching & Mutating Data with React-Query 4 Infinite list loading 🤔, with React Query - useInfiniteQuery hook ! Out of the box, TanStack Query is configured with aggressive but sane defaults. Jab component ko data chahiye: Cache check karo → Data fresh hai? Use karo. StaleTime: The duration until a query transitions from fresh to stale. This is Tagged with architecture, javascript, react, webdev. Query Key Construction: ['devices', activeGroup?. The frontend uses React Query (TanStack Query) for server state management, implementing Learn how to display updating data to user in React. When mutations modify server state, the cache must be invalidated to trigger refetches and ensure UI consistency. This article is for developers from beginner to advanced — especially if you want to understand performance and internals. In this part, we’ll take it a step further : we’ll learn how to add React Query DevTools to visualize what’s happening under the hood, and understand two critical concepts — staleTime and gcTime (formerly known as cacheTime). React-query performs a deep compare to update the component, so if your request returns the same data than in the previous request, react query will not update your component. The gcTime and staleTime options in React Query serve different purposes in managing and controlling the cached data lifecycle. js using useState, useEffect, WebSockets, and real-time patterns. It clarifies the purpose of cacheTime, which determines how long a response is stored before garbage collection, and staleTime, which dictates how long data is considered fresh, thus Out of the box, TanStack Query is configured with aggressive but sane defaults. By following these best practices—unique query keys, appropriate staleTime, proper use of placeholderData, and manual invalidation—you can ensure your application displays fresh and accurate data. Fetch Optimization: Prevents unnecessary data fetches by checking if cached data is still fresh based on staleTime configuration Query Subscription: Subscribes to a single Query instance and receives state updates when the query state changes Notification Delegation: Propagates state changes from Query to subscribers (typically React components) Hi everyone, I am working on implementing a custom auth provider for my refine app. useQuery is a React hook from TanStack Query for efficient data fetching, caching, and state synchronization in web applications. In my case I expect a re-render always. Prerequisites: Will be good if you have a very basic idea of what react-query is. It details the centralized query key factor Hello, I am running into an issue with useDataGrid (Material UI) and React Query. Here’s a brief explanation of each: 🎯 Key Takeaway Client state is predictable. Therefore, the data may be undefined, and a default should be returned. Let's look at the difference between cacheTime and staleTime - and how changes to one can impact the other. 0. Advanced TanStack Query v5 patterns for infinite queries, optimistic updates, prefetching, gcTime, and queryOptions. Sometimes these defaults can catch new users off guard or make learning/debugging difficult if they are unknown by the u This post covers React Query staleTime, which determines how long a piece of fetched data is considered fresh before it needs to be refetched. Adopting the mutate -> invalidate -> refetch flow has cleaned the shit out of my code. This document covers the React Query implementation used throughout the Campus Connect frontend for client-side data fetching, caching, and synchronization. The article "React Query: cacheTime vs staleTime" provides insights into optimizing data fetching in React applications using React Query (TanStack Query). 文章系统分析TanStack Query核心机制、缓存生命周期管理、动态策略调整以及持久化方案，通过架构图、状态图和参数对比表详细阐述staleTime、cacheTime等关键配置项的应用场景。 This document explains how the web application manages client-side state and fetches data from the API server. Two of the key features of React Query are initialData and staleTime. Here’s a brief explanation of each: Im making a query that returns me a set of values and that value with decrease over time till it reaches 0. i want to optimize it and make the data from the backend load fast TanStack Query (formerly React Query) is a powerful tool that handles caching, background fetching, and more. Server state is not. This means any time a component remounts or the window regains focus, React Query will try to refetch that data from the server. I need to fetch every 100ms the query but I want to be able to cancel the query when outdatedObjects reaches 0. React Query’s default settings (staleTime: 0, cacheTime: 5min) optimize for data freshness over performance, which is why developers need to adjust these values. React Query has its own garbage collector and is always trying to free up memory on the client in the background by deleting unneeded querys results. The component maintains its own render state using React's useReducer hook to force re-renders when query states change. Sometimes these defaults can catch new users off guard or make learning/debugging difficult if they are unknown by the u React開発をしていると、「TanStack Query」という名前を耳にすることがあります。 以前は「React Query」という名前でした。 「サーバーステート管理に便利」「Reduxより簡単」などと言われていますが、実際にReduxとどう違ってどういうメリットがあるのでしょう That is one of the reason why React Query looks for fresh content each time the page gets focus. React Query (TanStack Query) Cheat Sheet — Queries, Mutations, Caching & Infinite Scroll Complete TanStack Query v5 reference for server state management in React. It can be done by setting the staleTime to required milli seconds. Data missing ya stale? API se fetch karo. TLDR; In summary Sep 9, 2025 · Discover staleTime and cacheTime in React-Query. React Query solves this: When your app starts, React Query creates a CACHE. Two important settings in TanStack Query that play a key role in caching behavior are In queryOptions you can set the staleTime of a query to set how long it takes for data to be considered stale and warrant a refetch. Please thoroughly read the before reading this guide Basic Example This caching example illustrates the story and lifecycle of: Query Instances with and without cache data Background Refetching Inacti In React Query, two key options control the freshness and caching duration of query results: staleTime and gcTime (formerly cacheTime). tsx const { data, dataUpdatedAt, error, errorUpdatedAt, failureCount, failureReason, fetchStatus, isError, isFetched, isFetchedAfterMount, isFetching If QueryClient is the brain, then QueryCache is the database layer that stores everything. The staleTime: 1000 configuration tells React Query to consider cached data fresh for 1 second. I want to store data for 2 mins in the cache after first-time API call. . This guide explains the render/commit model, how the dependency array really works, safe async data fetching with cleanup, and practical debugging tactics. React’s useEffect is where side effects either become a clean synchronization layer—or turn into infinite loops, stale closures, and hidden coupling. This was happening randomly to me because the response of my request contains random changes but sometimes returns the same data. React Query and RTK Query exist because server state has complexity that React alone cannot manage efficiently. Is this expected? ReactQueryDevtools integrates with the core query system by accessing the QueryClient through React Context and subscribing to cache updates. In React Query v5, the cacheTime option in React Query has been renamed to gcTime. 0平台上的缓存策略实现与性能优化。文章系统分析TanStack Query核心机制、缓存生命周期管理、动态策略调整以及持久化方案，通过架构图、状态图和参数对比表详细阐述staleTime、cacheTime等 React Query (TanStack Query) Cheat Sheet — Server State Management Complete React Query reference — queries, mutations, caching, pagination, and optimistic updates. The caching in general works (for resource fetching) and I have explicitly defined the cache and stale parameters for accessControlProvider, but on navigation to a different menu I see that my custom accessControlProver gets called every time. No matter if May 22, 2024 · Here is a simple understanding of two very important concepts in react-query caching. This prevents unnecessary refetches while SSE updates are flowing, but ensures data is refreshed if the SSE connection was interrupted. jhjyk, vppq5, o7wdm, vtvtk, cmrdh, wnkggr, 5tpirc, lncvph, xdobl, ws9k,