diff --git a/Helpers/SimApiCache.cs b/Helpers/SimApiCache.cs
index 8ca460b..2e507a3 100644
--- a/Helpers/SimApiCache.cs
+++ b/Helpers/SimApiCache.cs
@@ -34,6 +34,16 @@ public class SimApiCache(IDistributedCache cache)
         cache.Remove(Prefix + key);
     }
 
+    /// <summary>
+    /// 缓存Key是否存在
+    /// </summary>
+    /// <param name="key"></param>
+    /// <returns></returns>
+    public bool HasKey(string key)
+    {
+        return Get<string>(key) != null;
+    }
+
     /// <summary>
     /// 获取string类型缓存
     /// </summary>
diff --git a/Helpers/SimApiError.cs b/Helpers/SimApiError.cs
index 57b487f..77bd715 100644
--- a/Helpers/SimApiError.cs
+++ b/Helpers/SimApiError.cs
@@ -11,6 +11,7 @@ public static class SimApiError
     /// <param name="code">错误代码</param>
     /// <param name="message">错误描述(若是常规错误,代码可自动带取描述)</param>
     /// <returns></returns>
+    [DoesNotReturn]
     public static void Error(int code = 500, string message = "")
     {
         throw new SimApiException(code, message);