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Posted to dev@brpc.apache.org by "chongg039 (via GitHub)" <gi...@apache.org> on 2024/01/29 06:33:25 UTC

[I] LB切换channel时如何感知并发起应用层握手 (brpc)

chongg039 opened a new issue, #2527:
URL: https://github.com/apache/brpc/issues/2527

   **Describe the bug (描述bug)**
   
   请教下，我们的场景是下游配置n个server，client用一致性哈希选择一个server建立连接。期望的动作时在
   1. 第一次发起连接请求
   2. FO切换连接
   时，client首先需要和服务端交互，类似应用层握手，成功后返回状态，此时client才能正常发送数据。
   
   我看了下代码，貌似DynamicPartitionChannel内部都是IssueRPC的时候选择一个可用的channel，应用层并无类似的hook调用方式感知到变化。请问有什么相关的经验可以借鉴吗
   
   **To Reproduce (复现方法)**
   
   
   **Expected behavior (期望行为)**
   
   
   **Versions (各种版本)**
   OS:
   Compiler:
   brpc:
   protobuf:
   
   **Additional context/screenshots (更多上下文/截图)**
   
   


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Re: [I] stream rpc能否搭配dynamic partition channel使用 (brpc)

Posted by "chongg039 (via GitHub)" <gi...@apache.org>.
chongg039 commented on issue #2527:
URL: https://github.com/apache/brpc/issues/2527#issuecomment-1920592824

   ![image](https://github.com/apache/brpc/assets/18239939/495ff7e1-a514-4d10-8bb1-a934a898d516)
   看了下普通的channel也支持负载均衡，写了个简单的FO测试，能够通过stream write的返回值判断连接状态。此时重新握手能够切换到另一个server，应该能满足要求。但还是没仔细看为什么Selective Channel不支持。


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Re: [I] LB切换channel时如何感知并发起应用层握手 (brpc)

Posted by "chongg039 (via GitHub)" <gi...@apache.org>.
chongg039 commented on issue #2527:
URL: https://github.com/apache/brpc/issues/2527#issuecomment-1916225569

   我发现stream rpc的实现，重新包装一下应该能满足大部分需求，就是不知道是否可以搭配partition channel使用？


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