abel533 opened a new issue #8604:
URL: https://github.com/apache/dubbo/issues/8604


   - [x] I have searched the [issues](https://github.com/apache/dubbo/issues) 
of this repository and believe that this is not a duplicate.
   - [x] I have checked the 
[FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository 
and believe that this is not a duplicate.
   
   ### Environment
   
   * Dubbo version: 2.7
   * Operating System version:  Windows 10
   * Java version: 11.0.5
   
   >用的 spring cloud alibaba, nacos 1.x
   
   ### Steps to reproduce this issue
   
   A->B 两个服务,如果A调用B服务超时(例如debug时),会把 RegistryDirectory 中的 forbidden 设置 true。
   
   B现在仍然在正常提供服务,但是因为A认为B挂了,就老死不相往来。。
   
   如果把B下线再上线,此时A刷新invoker会把 forbidden 设置 false,就又可以连接了。
   
   A是否应该有策略根据 forbidden = true 定期尝试服务是否可用。
   
   在开发环境中debug时,这个问题由于断点超时,非常常见,体验非常差。


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