beiwei30 commented on a change in pull request #55:
URL: https://github.com/apache/dubbo-go-samples/pull/55#discussion_r588167379
##########
File path: async/README.md
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@@ -1,24 +1,46 @@
-### Use Async Feature
+# Async Sample
-Implement this interface
+### Background
+
+Dubbo-go provides not only synchronous invocation, but also asynchronous
invocation on the consumer side. In order to
+use it, the client needs to implement the following interface to
asynchronously receive the response from the service
+provider:
```golang
-//AsyncCallbackService callback interface for async
type AsyncCallbackService interface {
- CallBack(response CallbackResponse) // callback
+CallBack(response CallbackResponse)
Review comment:
it's redundant, I think.
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