Turn FirebaseAnimatedList's into one single call

I'm starting my journey on Flutter, mostly following some tutorials and codes on the web. I've been using a pre-made project which are making a single call to every FirebaseAnimatedList on the app (there are more than 6 FirebaseAnimatedList in different pages). The code below is a example on how I'm making those calls.

I've some questions that would help me a lot!

• How would be a better and smarter way to make one single call for the entire app?
• How I would change those FirebaseAnimatedList to another widget displaying the same content?
• Is there a way to cache these data coming from the Firebase Realtime Database?
• Any other suggestion I highly appreciated!

Thanks again!

class ExampleCode extends GetView {
  ExampleCode({Key? key}) : super(key: key);
  Query dbRef = FirebaseDatabase.instance.ref().child('moedas');
  DatabaseReference reference = FirebaseDatabase.instance.ref().child('moedas');
  @override
  Widget build(BuildContext context) {
    FirebaseDatabase.instance.setPersistenceEnabled(true);
    return FirebaseAnimatedList(
      shrinkWrap: true,
      query: dbRef,
      itemBuilder: (BuildContext context, DataSnapshot snapshot,
          Animation animation, int index) {
        Map moedas = snapshot.value as Map;
        moedas['key'] = snapshot.key;
        return appCardDefault(
          child: Column(
            children: [
              Row(
                children: [
                  Text(
                    moedas['moedaName'],
                    style: appTextTheme.headline2,
                  ),
                  Text(moedas['currentValue'], style: appTextTheme.headline1),
                ],
              ),
              CachedNetworkImage(imageUrl: moedas['moedaImg']!, width: 60),
            ],
          ),
        );
      },
    );
  }
}