Feat: 주문번호 증가 시퀀스 테이블로 해결

src/main/java/com/readyvery/readyverydemo/domain/OrderNumberSequence.java

@@ -21,4 +21,8 @@ public class OrderNumberSequence {
 	@MapsId
 	@JoinColumn(name = "id") // Order 테이블과 조인하는 컬럼 지정
 	private Store store;
+
+	public void increaseOrderNumber() {
+		this.orderNumber++;
+	}
 }

src/main/java/com/readyvery/readyverydemo/domain/repository/OrderNumberSequenceRepository.java

@@ -0,0 +1,15 @@
+package com.readyvery.readyverydemo.domain.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Lock;
+
+import com.readyvery.readyverydemo.domain.OrderNumberSequence;
+
+import jakarta.persistence.LockModeType;
+
+public interface OrderNumberSequenceRepository extends JpaRepository<OrderNumberSequence, Long> {
+	@Lock(LockModeType.PESSIMISTIC_WRITE)
+	Optional<OrderNumberSequence> findOrderNumberByStoreId(Long storeId);
+}

src/main/java/com/readyvery/readyverydemo/global/exception/ExceptionCode.java

@@ -36,7 +36,8 @@ public enum ExceptionCode {
 	INVALID_INPUT(400, "Invalid input."),
 	UNAUTHORIZED(400, "Already User"),
 	AUTH_ERROR(403, "Auth Error"),
-	POINT_NOT_FOUND(403, "Point not found");
+	POINT_NOT_FOUND(403, "Point not found"),
+	ORDER_NUMBER_NOT_FOUND(403, "Order number not found");
 
 	private int status;
 	private String message;

src/main/java/com/readyvery/readyverydemo/src/order/OrderServiceImpl.java

@@ -30,6 +30,7 @@
 import com.readyvery.readyverydemo.domain.FoodieOption;
 import com.readyvery.readyverydemo.domain.FoodieOptionCategory;
 import com.readyvery.readyverydemo.domain.Order;
+import com.readyvery.readyverydemo.domain.OrderNumberSequence;
 import com.readyvery.readyverydemo.domain.Point;
 import com.readyvery.readyverydemo.domain.Progress;
 import com.readyvery.readyverydemo.domain.Receipt;
@@ -41,6 +42,7 @@
 import com.readyvery.readyverydemo.domain.repository.CouponRepository;
 import com.readyvery.readyverydemo.domain.repository.FoodieOptionRepository;
 import com.readyvery.readyverydemo.domain.repository.FoodieRepository;
+import com.readyvery.readyverydemo.domain.repository.OrderNumberSequenceRepository;
 import com.readyvery.readyverydemo.domain.repository.OrdersRepository;
 import com.readyvery.readyverydemo.domain.repository.PointRepository;
 import com.readyvery.readyverydemo.domain.repository.ReceiptRepository;
@@ -94,6 +96,7 @@ public class OrderServiceImpl implements OrderService {
 	private final CouponRepository couponRepository;
 	private final PointRepository pointRepository;
 	private final PointServiceFacade pointServiceFacade;
+	private final OrderNumberSequenceRepository orderNumberSequenceRepository;
 
 	@Override
 	public FoodyDetailRes getFoody(Long storeId, Long foodyId, Long inout) {
@@ -566,14 +569,12 @@ private void applyTosspaymentDto(Order order, TosspaymentDto tosspaymentDto) {
 		}
 	}
 
-	private synchronized String getOrderNumber(Order order) {
-		long todayOrder = ordersRepository.countByCreatedAtBetweenAndProgressNotAndStore(
-			order.getCreatedAt().toLocalDate().atStartOfDay(),
-			order.getCreatedAt().toLocalDate().atTime(23, 59, 59),
-			Progress.REQUEST,
-			order.getStore()
-		) + 1;
-		return Long.toString(todayOrder);
+	private String getOrderNumber(Order order) {
+		OrderNumberSequence sequence = orderNumberSequenceRepository.findOrderNumberByStoreId(order.getStore().getId())
+			.orElseThrow(() -> new BusinessLogicException(ExceptionCode.ORDER_NUMBER_NOT_FOUND));
+		sequence.increaseOrderNumber();
+		orderNumberSequenceRepository.save(sequence);
+		return Long.toString(sequence.getOrderNumber());
 	}
 
 	private void verifyOrder(Order order, Long amount) {