What methods do you know for storing data in applications?

In Flutter applications, there are several methods for data storage depending on the volume and type of data:

• Shared Preferences — for storing simple key-value pairs, such as user settings.
• File system — saving data to files, such as JSON or binary data.
• SQLite — an embedded relational database for storing structured data.
• Hive — a lightweight NoSQL database, fast and convenient for Flutter.
• Moor (Drift) — an ORM for working with SQLite, simplifies queries and data management.

Example of using Shared Preferences:

import 'package:shared_preferences/shared_preferences.dart';

Future<void> saveUsername(String username) async {
  final prefs = await SharedPreferences.getInstance();
  await prefs.setString('username', username);
}

Future<String?> getUsername() async {
  final prefs = await SharedPreferences.getInstance();
  return prefs.getString('username');
}