> Cloud Native friendly sounds good. but how to define it? What dubbo needs
> change to achieve this?

That’s the main reason why I started this discussion, we need to hear more from 
the community about what they think of Dubbo 3.0 and Cloud Native.

> Currently Dubbo is big and there are many related repos, some of them don't
> have updates for a long time.


I had a try on separating some of them out to a separate repo, I think I can 
continue working on it:
https://github.com/apache/dubbo-spi-extensions

> For Dubbo 3.0, when there is a clean picture what it should look like. We
> need a roadmap.
> And also for each version, exclude bug fixes, what kind of feature will
> include and what may include.


2.6/2.7 should focus on bugfixes while 3.0 can explore more new features. As 
for the 3.0 roadmap, I hope we can have a draft by the end of this discussion. 
It doesn't matter how perfect the draft roadmap is. We can improve it slowly.

> + Integration with other project/systems
> My understanding for Cloud Native, there are many great projects in the
> ecosystem. Dubbo is a PRC framework and many of Cloud features can be
> implemented with other projects/systems,
> maybe we can discuss what project/systems can Dubbo work together with,
> maybe for monitoring, service discovery, tracing, router and more.

+1, adapting to all kinds of  Cloud Native projects should be one important 
part of Dubbo’s Cloud Native plan. But considering the existing contributors, 
while most of them have limited time and can mainly focus on the development of 
the Dubbo core project, we need to figure out new ways to attract more 
community developers to get involved in this part.

Here is what I think we should do about Dubbo 3.0:
a. Introduce the next generation RPC protocol which will built on top of HTTP/2 
and will be much friendly to mesh, proxy, and mobile devices.
b. Refactor the current service discovery design, separating the data 
transmitted registry into two parts:
        * data strongly related to address, related to the instance where one 
app is deployed, this part can still publish to and notify by registry. 
        * data that used to instruct the client of how to interact with the 
server should be separated to another place, for example, the open slot list 
design mentioned in the third level of the REST Maturity Model[1]
c. Support Kubernetes Native Service through API-SERVER or DNS
d. Work with Control Plane (Mesh) seamlessly by supporting xDS configuration 
and service discovery.

1. https://martinfowler.com/articles/richardsonMaturityModel.html#level3

Jun

> On Jul 17, 2020, at 1:20 PM, YunKun Huang <[email protected]> wrote:
> 
> hey,
> 
> Cloud Native friendly sounds good. but how to define it? What dubbo needs
> change to achieve this?
> 
> I would like to add more topic for Dubbo 3.0
> 
> + Define Dubbo ecosystem
> Currently Dubbo is big and there are many related repos, some of them don't
> have updates for a long time.
> It's better to have a clean understanding here. to define what Dubbo can
> provide and will continually maintain.
> 
> + Roadmap and release plan
> For Dubbo 3.0, when there is a clean picture what it should look like. We
> need a roadmap.
> And also for each version, exclude bug fixes, what kind of feature will
> include and what may include.
> This can help users to know what's happening to Dubbo and what's the next
> step, so they can make better plans for their own stuff, like version
> upgrading.
> 
> + Integration with other project/systems
> My understanding for Cloud Native, there are many great projects in the
> ecosystem. Dubbo is a PRC framework and many of Cloud features can be
> implemented with other projects/systems,
> maybe we can discuss what project/systems can Dubbo work together with,
> maybe for monitoring, service discovery, tracing, router and more.
> 
> Yunkun
> 
> 
> On Thu, Jul 16, 2020 at 7:37 PM Jun Liu <[email protected]> wrote:
> 
>> Hi, Folks
>> 
>> I would like to initiate a discussion about Dubbo 3.0.
>> 
>> Recently, I was thinking about the next generation Dubbo, focusing on
>> supporting larger-scale cluster with millions of instances, adapting to
>> cloud native infrastructures, working with Service Mesh, etc.. I also
>> noticed that many developers in the community are also discussing this
>> topic on GitHub and other occasions recently. Most users want to make their
>> Dubbo based micro-services Cloud Native, this requires the change of Dubbo
>> framework itself.
>> 
>> In my mind, the key word of Dubbo 3.0 should be Cloud Native, we should
>> focus on making a plan to create a more Cloud Native friendly RPC
>> framework. Approximately in 2018, the community had a discussion on
>> defining Dubbo 3.0, which is mostly restricted the theme of Reactive
>> Stream. But today, when talking about Dubbo 3.0 again, i think Reactive
>> Stream is still an important topic, but we should think much broader.
>> 
>> I am just trying to give out some of my own thoughts on Dubbo 3.0. Hope to
>> hear more from you.
>> 
>> Jun
>> 
>> 

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