缓存数据库会议预定数据，时间1分钟,修改每次都查数据库

xueyi-modules/xueyi-system/src/main/java/com/xueyi/system/meeting/controller/DmMeetingOrdersController.java

@@ -137,7 +137,9 @@ public class DmMeetingOrdersController extends BaseController<DmMeetingOrdersQue
                 return dto;
             }).toList();
             if (!res.isEmpty()) {
-                redisService.setCacheList(REDIS_KEY+dateStr+":"+spaceId, res, 60, TimeUnit.SECONDS);
+                redisService.setCacheList(REDIS_KEY+dateStr+":"+spaceId, res, 60L, TimeUnit.SECONDS);
+            } else {
+                redisService.setCacheObject(REDIS_KEY+dateStr+":"+spaceId, "empty", 60L, TimeUnit.SECONDS);//避免每次都查数据库，塞入字符串
             }
         }