{
  "id": 5330195,
  "title": "Taming Flutter Infinite Scroll: Why 3 Lines of async* Missed the Point, and How BlocSignal Fixes It",
  "url": "https://urgent.news/2026/09/03/taming-flutter-infinite-scroll-why-3-lines-of-async-missed-the-point",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-03T12:47:27.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/gde/taming-flutter-infinite-scroll-why-3-lines-of-async-missed-the-point-and-how-blocsignal-fixes-it-3n48"
  },
  "original_language": "en",
  "account": "Nearly every Flutter engineer has faced the infamous infinite scroll race condition in production environments. Users often trigger multiple scroll notifications past the bottom threshold within milliseconds, even when dealing with spotty cellular connections. This results in duplicated items, page counters jumping ahead, or state machines becoming entirely locked up. Recently, a widely discussed article titled \"3 Lines of Dart async* Code That Fixed My Infinite Scroll Pagination\" by mobile developer Ali Wajdan gained significant attention. In his article, Ali accurately identified the root cause of standard pagination headaches: most Flutter pagination code wraps a mutable state object around a scroll listener, which includes a page counter, a loading boolean, a hasMore flag, and a fetch method called when the scroll threshold is reached. While Ali's solution encapsulates pagination logic inside a Dart async* generator and consumes it using a StreamIterator, it does not fully address the concurrency issue in production scenarios.",
  "summary": "The Ubiquitous Infinite Scroll Pagination Bug Almost every Flutter engineer has encountered the dreaded infinite scroll race condition in production. The user opens a list, flings their thumb down the screen on a spotty cellular connection, and triggers multiple scroll notifications past the bottom threshold within milliseconds. Before the first asynchronous HTTP network request finishes, the…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Dev.to",
        "title": "Taming Flutter Infinite Scroll (Part 2): Turning ScrollController into a Reactive State Machine with CubitSignalMixin",
        "url": "https://urgent.news/2026/09/03/taming-flutter-infinite-scroll-part-2-turning-scrollcontroller-into-a",
        "published": "2026-09-03T17:31:52.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}