TanStack Query v5: Infinite Scrolling and Cache Management

Mastering TanStack Query v5 requires moving beyond basic data fetching to implement robust server-state synchronization, efficient cursor-based pagination, and granular cache invalidation strategies in modern React applications.

As data-driven web applications scale, managing asynchronous server state efficiently becomes paramount. Traditional useEffect data-fetching hooks often lead to race conditions, redundant network requests, lack of background synchronization, and complex caching bugs.

TanStack Query (formerly known as React Query) solves these challenges by providing a powerful, type-safe data-fetching and caching layer. Version 5 introduces a unified options object syntax, improved garbage collection mechanics, and optimized rendering behaviors that streamline complex UI patterns.

This comprehensive guide explores how to harness TanStack Query v5 to implement infinite scrolling lists, manage cursor-based pagination, and structure robust cache invalidation workflows.

Understanding Server State vs. Client State

In modern React development, separating server state from local client state is crucial. Server state is persisted remotely, owned by asynchronous APIs, and subject to updates by multiple users without your application's direct knowledge.

TanStack Query manages server state through three core primitives:

• Queries: Declarative dependencies tied to a unique query key for fetching data, handling caching, background refetching, and stale-while-revalidate logic.

• Mutations: Functions designed to create, update, or delete server data, paired with optimistic updates and automatic cache invalidation triggers.

• Query Client: The central cache manager that controls cache persistence, garbage collection times, refetch behaviors, and global configuration defaults.

Building Infinite Lists with useInfiniteQuery

Infinite scrolling allows users to load continuous chunks of data as they scroll down a page, replacing traditional paged navigation. TanStack Query simplifies this via the `useInfiniteQuery` hook.

Unlike standard queries, `useInfiniteQuery` tracks multiple pages of data, supplying a `fetchNextPage` function, a `hasNextPage` boolean flag, and pagination cursors automatically.

'use client';

import { useInfiniteQuery } from '@tanstack/react-query';
import { useIntersection } from '@mantine/hooks';
import { useEffect, useRef } from 'react';

interface Project {
  id: string;
  name: string;
  description: string;
}

async function fetchProjects({ pageParam = 1 }: { pageParam: number }) {
  const res = await fetch(`https://api.example.com/projects?page=${pageParam}&limit=10`);
  if (!res.ok) throw new Error('Failed to fetch projects');
  return res.json();
}

export default function InfiniteProjectsList() {
  const {
    data,
    fetchNextPage,
    hasNextPage,
    isFetchingNextPage,
    status,
  } = useInfiniteQuery({
    queryKey: ['projects'],
    queryFn: fetchProjects,
    initialPageParam: 1,
    getNextPageParam: (lastPage, allPages) => {
      return lastPage.hasMore ? allPages.length + 1 : undefined;
    },
  });

  const lastProjectRef = useRef<HTMLDivElement>(null);
  const { ref, entry } = useIntersection({
    root: null,
    threshold: 1,
  });

  useEffect(() => {
    if (entry?.isIntersecting && hasNextPage && !isFetchingNextPage) {
      fetchNextPage();
    }
  }, [entry, hasNextPage, isFetchingNextPage, fetchNextPage]);

  if (status === 'pending') return <p>Loading initial projects...</p>;
  if (status === 'error') return <p>Error loading projects.</p>;

  return (
    <div className="max-w-2xl mx-auto p-6">
      <h1 className="text-3xl font-bold mb-6">Project Directory</h1>
      <div className="space-y-4">
        {data.pages.map((page, pageIndex) => (
          page.projects.map((project: Project, idx: number) => {
            const isLastItem = pageIndex === data.pages.length - 1 && idx === page.projects.length - 1;
            return (
              <div
                key={project.id}
                ref={isLastItem ? ref : undefined}
                className="p-4 bg-white rounded-xl shadow border border-gray-100"
              >
                <h2 className="text-xl font-semibold">{project.name}</h2>
                <p className="text-gray-600 mt-1">{project.description}</p>
              </div>
            );
          })
        ))}
      </div>
      {isFetchingNextPage && <p className="text-center py-4 text-gray-500">Loading more...</p>}
    </div>
  );
}

Controlling Cache Lifecycles and Invalidation Strategies

Effective cache management prevents unnecessary network traffic while ensuring users always view up-to-date information. TanStack Query v5 provides fine-grained control over cache invalidation, garbage collection, and stale times.

When a mutation occurs (such as creating a new project or updating user settings), stale data must be purged immediately. Using `queryClient.invalidateQueries` triggers background refetches for all active queries matching specific query keys.

import { useMutation, useQueryClient } from '@tanstack/react-query';

export function useCreateProject() {
  const queryClient = useQueryClient();

  return useMutation({
    mutationFn: async (newProject: { name: string; description: string }) => {
      const res = await fetch('https://api.example.com/projects', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(newProject),
      });
      if (!res.ok) throw new Error('Failed to create project');
      return res.json();
    },
    onSuccess: () => {
      // Invalidate projects query cache to trigger immediate background refetch
      queryClient.invalidateQueries({ queryKey: ['projects'] });
    },
  });
}

Structural Sharing and Garbage Collection

TanStack Query utilizes **structural sharing** by default. When new query data returns from an API request, the library compares the newly fetched objects with existing cached data reference by reference. If unchanged, it retains the old object reference, preventing downstream React components from re-rendering unnecessarily.

Additionally, configuring `gcTime` (garbage collection time, formerly `cacheTime`) and `staleTime` correctly ensures that inactive query data is cleaned up efficiently while avoiding redundant refetches on component remounts.

Summary

TanStack Query v5 elevates React state management by offering robust tools for server-state synchronization, infinite scrolling lists, and precise cache invalidation.

By mastering `useInfiniteQuery`, leveraging targeted cache invalidation mutations, and tuning stale and garbage collection times, developers can build responsive, high-performance web applications that scale effortlessly.