add synchronized keyword controller

Author: wken5577

src/main/java/com/gg/server/domain/game/GameController.java

@@ -66,7 +66,7 @@ GameTeamInfo getGameInfo(@PathVariable Long gameId, @Parameter(hidden = true) @L
     }
 
     @PostMapping("/rank")
-    ResponseEntity createRankResult(@Valid @RequestBody RankResultReqDto reqDto, @Parameter(hidden = true) @Login UserDto user) {
+    synchronized ResponseEntity createRankResult(@Valid @RequestBody RankResultReqDto reqDto, @Parameter(hidden = true) @Login UserDto user) {
         if (reqDto.getMyTeamScore() + reqDto.getEnemyTeamScore() > 3 || reqDto.getMyTeamScore() == reqDto.getEnemyTeamScore()) {
             throw new InvalidParameterException("점수를 잘못 입력했습니다.", ErrorCode.VALID_FAILED);
         }

src/main/java/com/gg/server/domain/game/service/GameService.java

@@ -58,7 +58,7 @@ public GameTeamInfo getUserGameInfo(Long gameId, Long userId) {
             @CacheEvict(value = "allGameList", allEntries = true),
             @CacheEvict(value = "allGameListByUser", allEntries = true)
     })
-    public synchronized Boolean createRankResult(RankResultReqDto scoreDto, Long userId) {
+    public Boolean createRankResult(RankResultReqDto scoreDto, Long userId) {
         // 현재 게임 id
         Game game = gameFindService.findByGameId(scoreDto.getGameId());
         if (game.getStatus() != StatusType.WAIT && game.getStatus() != StatusType.LIVE) {