Maintain the app's data continuity even as I switch between different pages and return

I'm currently using React and Next.js in conjunction with Firestore. As I fetch data from Firebase on one page using useEffect once the page is rendered, I've noticed that the read operation can be resource-intensive. To avoid unnecessary fetching of the same data when the user navigates between pages, I am looking for a way to persist the fetched data so it doesn't need to be retrieved repeatedly. Any suggestions on how I can achieve this would be greatly appreciated. Thank you!

useEffect(() => {
    var newObj = {};
    FB.getAllFiles()
      .then((snapshot) => {
        snapshot.forEach((doc) => {
          const data = doc.data();
          newObj[data["name"]] = data["count"];
        });
      })
      .then(() => {
        setCounts(newObj);
      })
      .catch((e) => console.log(e));
  }, []);

Answer ā„–1

If you're looking for a solid approach, consider utilizing Context to establish a centralized data store for your information. This allows you to access the data as a reliable single source of truth.

Answer ā„–2

To enhance your application, consider utilizing the context and managing realtime listeners effectively. Through controlling when these listeners start or stop, you can optimize their performance. Check out this example of Providers designed for Firebase that demonstrate how to achieve this. These Providers also offer features like offline functionality for PWAs and state persistence across reloads.

It is crucial to remember that failing to persist realtime listeners may negate the benefits of storing data in local state. Without persistence, each call to the listener will reload all the data, incurring unnecessary costs. By persisting the data, users can access it locally and experience quicker app loading times.

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