[perf] 내 티켓 디테일 조회 API - FetchJoin을 활용한 성능 개선

* perf: 내 티켓 디테일 조회 API 성능 개선 작업 진행-fetchJoin

* refactor: 임시 데이터 삭제

Author: kimeunkyoungg

backend/src/main/java/com/back/api/ticket/controller/TicketController.java

@@ -26,7 +26,7 @@ public class TicketController implements TicketApi {
 	@Override
 	@GetMapping("/my")
 	public ApiResponse<List<TicketResponse>> getMyTickets() {
-		Long userId = httpRequestContext.getUser().getId();
+		Long userId = httpRequestContext.getUserId();
 
 		List<TicketResponse> responses = ticketService.getMyTickets(userId);
 
@@ -38,7 +38,7 @@ public ApiResponse<List<TicketResponse>> getMyTickets() {
 	public ApiResponse<TicketResponse> getMyTicketDetails(
 		@PathVariable Long ticketId
 	) {
-		Long userId = httpRequestContext.getUser().getId();
+		Long userId = httpRequestContext.getUserId();
 
 		Ticket ticket = ticketService.getTicketDetail(ticketId, userId);
 

backend/src/main/java/com/back/api/ticket/service/TicketService.java

@@ -176,7 +176,7 @@ public List<TicketResponse> getMyTickets(Long userId) {
 	@Transactional(readOnly = true)
 	public Ticket getTicketDetail(Long ticketId, Long userId) {
 
-		Ticket ticket = ticketRepository.findById(ticketId)
+		Ticket ticket = ticketRepository.findByIdWithDetails(ticketId)
 			.orElseThrow(() -> new ErrorException(TicketErrorCode.TICKET_NOT_FOUND));
 
 		if (!ticket.getOwner().getId().equals(userId)) {

backend/src/main/java/com/back/domain/ticket/repository/TicketRepository.java

@@ -6,6 +6,7 @@
 
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 import com.back.domain.ticket.entity.Ticket;
 import com.back.domain.ticket.entity.TicketStatus;
@@ -26,4 +27,10 @@ public interface TicketRepository extends JpaRepository<Ticket, Long>, TicketRep
 	Optional<Ticket> findBySeatIdAndOwnerIdAndTicketStatus(Long seatId, Long userId, TicketStatus ticketStatus);
 
 	Optional<Ticket> findByEventIdAndOwnerIdAndTicketStatus(Long eventId, Long userId, TicketStatus ticketStatus);
+
+	@Query("SELECT t FROM Ticket t "
+		+ "LEFT JOIN FETCH t.event e "
+		+ "LEFT JOIN FETCH t.seat s "
+		+ "WHERE t.id = :ticketId")
+	Optional <Ticket> findByIdWithDetails(@Param("ticketId") Long ticketId);
 }

backend/src/main/resources/application.yml

@@ -16,7 +16,7 @@ spring:
         default_batch_fetch_size: 100
     hibernate:
       ddl-auto: update
-    show-sql: false
+    show-sql: true
   mvc:
     hiddenmethod:
       filter: