purgeExpired method

@override Future<int> purgeExpired()

Removes expired entries. Reads already ignore them; this reclaims space.

Implementation

@override
Future<int> purgeExpired() async {
  await initialize();
  return database.execute(
    'DELETE FROM $tableName WHERE expires_at IS NOT NULL AND expires_at <= ?',
    <Object?>[DateTime.now().millisecondsSinceEpoch],
  );
}