Scheduled task for deleting order reservations causes high database load due to wrong findAll() call

[julian9499]

Ordertaskscheduler causes a high database load every 30 minutes. The findall method call iterates over the entire database:

@Scheduled(fixedRate = CLEAN_UP_TASK_INTERVAL_SECONDS * MILLISEC_IN_SEC)
    public void cleanUpTask() {
        orderService.getAllOrders().forEach(order -> {
            if (order.getCreatedAt().isBefore(LocalDateTime.now().minusMinutes(CLEAN_UP_INTERVAL))) {
                OrderStatus[] cleanUpStatus = new OrderStatus[]{OrderStatus.ANONYMOUS, OrderStatus.ASSIGNED};

                if (ArrayUtils.contains(cleanUpStatus, order.getStatus())) {
                    log.info("Order " + order.getPublicReference() + ": Order has been deleted!");
                    orderService.delete(order);
                }
            }
        });
    }
    ```