Ken Liu

[3.0] Unify usage of group in registry, metadata and configcenter

7

As titled, check group usage of Nacos, Zookeeper

Who's Using Dubbo3? 谁在使用 Dubbo3？

32

## 谁在使用 Dubbo3 我们期望通过这个 issue 了解更多的 Dubbo3 的社区用户信息，并借此与社区用户建立更多的联系，了解社区用户对 Dubbo3 的使用方式及遇到的问题，以更好的帮助用户解决问题，推动 3.0 的演进及生态发展。 您也可以在此查看 Dubbo2 用户 https://github.com/apache/dubbo/issues/1012 您可以告诉我们使用 Dubbo3 的经验及遇到的问题，包括： * 您看中的 Dubbo3 的重要特性 * Dubbo2 的使用经验，迁移到 Dubbo3 的相关经验 * 最期望看到...

Multiple registries

1

查看官网【Java/参考手册/注册中心说明/多注册中心】了解配置详情。

GSoC 2022: Observasibility and Metrics

6

Please read the [Observasibility](https://github.com/apache/dubbo-awesome/blob/master/proposals/D4-observability.md) here first to know about the ultimate goal behind this issue. If you are interested in this project and the objective described in the proposal, please...

Reported by Huxing Zhang in @dev mailing list: > > I went through the very first chapters of user manual and I think the > Chinese version is not updated...

[Performance Tuning]Use NotifyAll instead of Notify one after one on address notification.

3

 Use NotifyAll instead of Notify one after one.

Exception caught from Dubbo Admin

2

```java 2022-11-25 20:16:56.951 ERROR 32001 --- [-20880-thread-3] o.a.dubbo.rpc.filter.ExceptionFilter : [DUBBO] Got unchecked and undeclared exception which called by fd00:1:5:5200:46d0:8a8f:9b6e:92bf. service: org.apache.dubbo.metadata.MetadataService, method: getSubscribedURLs, exception: java.lang.NullPointerException: null, dubbo version: 3.1.2, current...