relatica/lib/riverpod_controllers/rp_provider_extension.dart

import 'dart:async';

import 'package:flutter_riverpod/flutter_riverpod.dart';

extension CacheForExtension on AutoDisposeRef<Object?> {
  ///@riverpod
  // Future<Object> example(ExampleRef ref) async {
  //   /// Keeps the state alive for 5 minutes
  //   ref.cacheFor(const Duration(minutes: 5));
  //
  //   return http.get(Uri.https('example.com'));
  // }
  /// Keeps the provider alive for [duration].
  void cacheFor(Duration duration) {
    // Immediately prevent the state from getting destroyed.
    final link = keepAlive();
    // After duration has elapsed, we re-enable automatic disposal.
    final timer = Timer(duration, link.close);

    // Optional: when the provider is recomputed (such as with ref.watch),
    // we cancel the pending timer.
    onDispose(timer.cancel);
  }
}