public static void DelelteBackups()
{
DatabaseAdminClient databaseAdminClient = DatabaseAdminClient.Create();
//delete backup contains "a"
var dataTime = DateTime.UtcNow.AddDays(1).ToString("yyyy-MM-dd");
var listBackupRequest = new ListBackupsRequest
{
Parent = InstanceName.Format(projectId, instanceId),
Filter = $"create_time < {dataTime}"
};
var backups = databaseAdminClient.ListBackups(listBackupRequest);
foreach (var backup in backups)
{
var deleteBackupRequest = new DeleteBackupRequest()
{
Name = backup.Name
};
databaseAdminClient.DeleteBackup(deleteBackupRequest);
}
}