add method

@override Future<bool> add(String key, dynamic value, Duration ttl)

Stores a value in the cache if the key does not exist.

Returns true if the item was actually added, false otherwise.

• Parameters:
  • key: A non-null, non-empty string representing the cache key.
  • value: The data to be cached.
  • ttl: The duration for which the item should remain in the cache.

Implementation

@override
Future<bool> add(String key, dynamic value, Duration ttl) async {
  if (key.isEmpty) throw ArgumentError('Cache key cannot be empty');

  final serializedValue = jsonEncode(value);
  final ttlInSeconds = ttl.inSeconds;

  // SET key value NX EX ttl
  final result = await _executeCommand(
    [
      'SET',
      key,
      serializedValue,
      'NX',
      'EX',
      ttlInSeconds > 0 ? ttlInSeconds : 1,
    ],
    isWrite: true,
  );

  return result == 'OK';
}