增加休眠时间，减少冲突

mec-biz/src/main/java/com/ym/mec/biz/service/impl/MusicGroupServiceImpl.java

@@ -415,7 +415,7 @@ public class MusicGroupServiceImpl extends BaseServiceImpl<String, MusicGroup> i
                 }
             }
             if (!flag) {
-                throw new BizException("活动火爆，请稍后再试");
+                throw new BizException("活动火爆，请稍后再试"+ran2);
             }
         }