diff --git a/notes/helloshop/ordering-service.md b/notes/helloshop/ordering-service.md
index 22ba003..2745f66 100644
--- a/notes/helloshop/ordering-service.md
+++ b/notes/helloshop/ordering-service.md
@@ -117,7 +117,18 @@ dotnet add package Dapr.AspNetCore
 services.AddDaprClient();
 ```
 
-## 使用
+## 重构文件夹
+
+`EntityFrameworks` 文件架更改为 `Infrastructure` 文件夹
+
+`BasketService` 微服务 `Infrastructure` 之下再放 `Repositories`
+
+## 实现发件箱模式
+
+```csharp
+builder.Services.AddTransient<IDistributedEventLogService, DistributedEventLogService<OrderingServiceDbContext>>();
+```
+
 
 ## 参考资料
 
@@ -125,4 +136,4 @@ https://learn.microsoft.com/zh-cn/azure/architecture/patterns/cqrs
 
 https://learn.microsoft.com/zh-cn/dotnet/architecture/microservices/microservice-ddd-cqrs-patterns
 
-https://www.xcode.me/Training?keyword=cqrs
\ No newline at end of file
+https://www.xcode.me/Training?keyword=cqrs