>I have just merged dev-metadata branch into master, from now on, the master branch will work as the develop and release codebase of v2.7.0. Branch dev-metadata does not need to be kept anymore, I will delete dev-metadata later today if there’re no more PRs come to it.
Great work, looking forward to the new features! jun liu <[email protected]> 于2018年12月24日周一 下午4:33写道： > Hi, All > > I have just merged dev-metadata branch into master, from now on, the > master branch will work as the develop and release codebase of v2.7.0. > Branch dev-metadata does not need to be kept anymore, I will delete > dev-metadata later today if there’re no more PRs come to it. > > Jun > > > On Dec 21, 2018, at 11:37 AM, jun liu <[email protected]> wrote: > > > > Two more things to mention: > > > > 1. I am thinking of merge this dev-metadata branch back to the master. > Both these two branches have the same version 2.7.0-SNAPSHOT and they > together consist of v2.7’s release candidates. While they are evolving at > the same time concurrently, conflicts keep happening. I have been kept > merging the master branch to dev-metadata to try to avoid conflicts to the > most extend during the development of dev-metadata. Now, since the changes > in dev-metadata are stable enough, at least it won’t be a block for the > development in master (which is also the biggest concern why we created > this new branch), I think it’s time for us to merge the changes back and > work on the unified master branch. > > > > 2. Is there any plan for the release of OPS? Most of the new features > introduced in v2.7 are service governance related abilities and most users > have get used to using Dubbo OPS to do interoperability with their Dubbo > services. Thus I think it would be great if an OPS version supporting these > features can be released at the same time as v2.7 or slightly after it . > > @Minxuan @Majinkai, I know you guys are working on OPS project, any news > to update? > > > > Jun > > > >> On Dec 21, 2018, at 10:35 AM, jun liu <[email protected] <mailto: > [email protected]>> wrote: > >> > >>> 1. Prioritization of centralized configuration > >> > >> Now, the centralized configuration or externalized configuration is > implemented to has the highest priority by default. For flexible concerns, > a switch is designed and opened to users so that they can override the > default value, for example, you can use the following JVM property to give > centralized configuration a lower priority than the local one: > dubbo.configCenter.highestPriority=false. > >> > >>> 2. The logic of the route is more complicated, and the compatibility > with > >>> the original low version is guaranteed. > >> > >> When saying of complexity, I guess you mainly refer to the routing > module, because this module is one of the most evident parts that has > changed in this version and is also newly introduced. Its main purpose is > to improve the performance of the runtime. After all, there will be some > performance loss when routing is executed for address filtering every time > an RPC is executed. > >> However, I agree we should be really careful about this cache part > since it works as an crucial path on the RPC wire. Some possible drawbacks > I can come up with it now are: excessive resource usage, priority guarantee > of routers in chain, etc. I think we can discuss more about the technical > details of this part, give it more test and then decide whether to release > it this time or wait until it’s mature enough. > >> > >>> 3.Tag routing has been modified, how is the compatibility with the > original? > >> > >> It has full backward compatibility with the original implementation > with only the supporting of of DynamicConfiguration added. > >> > >>> 4. How does the Environment clear responsibility? It is best to have an > >>> independent description. > >> > >> Sorry, I don’t understand this one. Basically, you can think > Environment as the counterpart of that in Spring. I agree we should add a > document describing the design purpose and how to use it. > >> > >> Jun > >> > >>> On Dec 14, 2018, at 12:26 PM, victory <[email protected] <mailto: > [email protected]>> wrote: > >>> > >>> All of this features are the biggest concert in the community. > >>> I have some questions： > >>> 1.中心化配置的优先级 > >>> 2.路由的逻辑比较复杂，和原来低版本的兼容性怎么保证 > >>> 3.Tag路由改造了，和原来的兼容性怎么样？ > >>> 4.Environment这个东西是怎么明确职责的？最好能有个独立的说明。 > >>> ---------- > >>> 1. Prioritization of centralized configuration > >>> 2. The logic of the route is more complicated, and the compatibility > with > >>> the original low version is guaranteed. > >>> 3.Tag routing has been modified, how is the compatibility with the > original? > >>> 4. How does the Environment clear responsibility? It is best to have an > >>> independent description. > >>> > >>> > >>> jun liu <[email protected] <mailto:[email protected]>> > 于2018年12月7日周五 下午8:11写道： > >>> > >>>> Hi, All > >>>> > >>>> I’ve just posted some blogs[4] on Github issues relating to the design > >>>> principles and implementations of V2.7.0, the content are based > mainly on > >>>> my own understanding of the 2.7.0 codebase (hosted on branch > >>>> dev-metadata[1]) and the previous discussions[2][3]. > >>>> > >>>> Recently, I spent plenty of my spare times on 2.7.0, mainly focusing > on > >>>> metadata refactoring, I am happy to see that v2.7.0 is on a right > direction > >>>> to meet community requirements and keeps evolving. The main changes or > >>>> features already included in v2.7.0 branch are: > >>>> > >>>> * Config Center: Zookeeper, Apollo, Nacos > >>>> * Externalized Configuration > >>>> * Service governance enhancement: dynamic configuration & routing rule > >>>> * Repackage to 'org.apache.dubbo' > >>>> * Java 8 support > >>>> * Async programming support > >>>> > >>>> Most of the features above have been mentioned or discussed on the > mailing > >>>> list or Github issues days or months ago. But during the design and > coding > >>>> process, more details come up that need to be further discussed and > >>>> decided. The design principles and implementations on v2.7.0 branch > now are > >>>> far from the the final decision, they may be not the best choice or > even > >>>> turn to be unreasonable, so you can think them as a prototype > >>>> implementation provided for your reference. Now, we need to know your > >>>> opinions on v2.7.0, please help to review the designs and codes, > whenever > >>>> you have better ideas or suggestions, please don’t hesitate to let the > >>>> community know. > >>>> > >>>> FYI: If you want to know more implementation details and try to read > the > >>>> codes or commits directly, you may find it hard to follow, because > there’re > >>>> too much file changes in there. So I would suggest you read the > summaries I > >>>> wrote in the blogs first and then dive into the code related to the > part > >>>> you interest one by one. > >>>> > >>>> 1. https://github.com/apache/incubator-dubbo/tree/dev-metadata < > https://github.com/apache/incubator-dubbo/tree/dev-metadata> > >>>> 2. https://github.com/apache/incubator-dubbo/issues/2030 < > https://github.com/apache/incubator-dubbo/issues/2030> > >>>> 3. https://github.com/apache/incubator-dubbo/issues/2341 < > https://github.com/apache/incubator-dubbo/issues/2341> > >>>> 4. https://github.com/apache/incubator-dubbo/issues/2919 < > https://github.com/apache/incubator-dubbo/issues/2919> > >>>> > >>>> Jun > >>>> > >>>> > >>> > >>> -- > >>> > >>> Best Regard! > >>> cvitory > >> > > > >
