diff --git a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
index 39b4c02..1a2f43d 100644
--- a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
+++ b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService.cs
@@ -123,8 +123,8 @@ namespace YD_AllHeartRates.Api.Mqtt
 
                     devices = _smartSportsContext.Device.Where(x => x.SchoolCode == AppSettings.SchoolCode && !string.IsNullOrWhiteSpace(x.StudentNo)).ToList();
 
-                    _caching.AddObject(studentListCacheKey, studentList, 28800);
-                    _caching.AddObject(deviceListCacheKey, devices, 28800);
+                    _caching.AddObject(studentListCacheKey, studentList, 600);
+                    _caching.AddObject(deviceListCacheKey, devices, 600);
                 }
 
                 var heartRateEntities = new ConcurrentBag<HeartRateData>();
@@ -256,7 +256,7 @@ namespace YD_AllHeartRates.Api.Mqtt
                                 totalData.QuantityOfElectricity = jumpData.QuantityOfElectricity;
                                 totalData.ScoreTime = jumpData.ScoreTime;
 
-                                _caching.AddObject(jumpKey, totalData, 28800);
+                                _caching.AddObject(jumpKey, totalData, 600);
                                 _caching.AddObject(rawKey, jumpData, 60);
                             }
                         }
diff --git a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService2.cs b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService2.cs
index 629b447..e74a478 100644
--- a/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService2.cs
+++ b/YD_AllHeartRates.Api/Mqtt/MqttBackgroundService2.cs
@@ -256,7 +256,7 @@ namespace YD_AllHeartRates.Api.Mqtt
                         totalData.ScoreTime = jumpData.ScoreTime;
 
                         // 写入缓存（总值 + 原始值）
-                        _caching.AddObject(jumpKey, totalData, 28800);
+                        _caching.AddObject(jumpKey, totalData, 600);
                         _caching.AddObject(rawKey, jumpData, 60);
 
                         // 记录活跃学生编号（便于定时入库）