diff --git a/VideoAnalysisCore/Controllers/VideoTaskController.cs b/VideoAnalysisCore/Controllers/VideoTaskController.cs
index dcdaa49..d6f1202 100644
--- a/VideoAnalysisCore/Controllers/VideoTaskController.cs
+++ b/VideoAnalysisCore/Controllers/VideoTaskController.cs
@@ -463,7 +463,8 @@ namespace VideoAnalysisCore.Controllers
         public IActionResult OnlineDevices()
         {
             // 扫描 Heartbeat Key
-            var keys = redisManager.Redis.Keys(RedisExpandKey.DeviceHeartbeat("*"));
+            var pattern = RedisExpandKey.DeviceHeartbeat("*");
+            var keys = redisManager.Redis.Scan(pattern, 1000).ToList();
             var prefix = RedisExpandKey.DeviceHeartbeat("");
             var devices = keys.Select(k => k.Replace(prefix, "")).ToList();
             return Ok(devices);
@@ -488,7 +489,8 @@ namespace VideoAnalysisCore.Controllers
                 // 获取所有在线节点
                 oldTaskArr = new List<long>();
                 // 直接扫描 Heartbeat Key 获取在线设备
-                var keys = redisManager.Redis.Keys(RedisExpandKey.DeviceHeartbeat("*"));
+                var pattern = RedisExpandKey.DeviceHeartbeat("*");
+                var keys = redisManager.Redis.Scan(pattern, 1000).ToList();
                 var prefix = RedisExpandKey.DeviceHeartbeat("");
                 var onlineDevices = keys.Select(k => k.Replace(prefix, "")).ToList();