[jira] [Created] (SCB-1295) Syncer for synchronize data between multiple service centers

["Zhinan Lin (JIRA)" <ji...@apache.org>]

Zhinan Lin created SCB-1295:
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             Summary: Syncer for synchronize data between multiple service centers
                 Key: SCB-1295
                 URL: https://issues.apache.org/jira/browse/SCB-1295
             Project: Apache ServiceComb
          Issue Type: New Feature
          Components: Service-Center
    Affects Versions: service-center-1.3.0
            Reporter: Zhinan Lin
             Fix For: service-center-1.3.0
         Attachments: Service-Center异构-v1.0.pdf

Add basic minimal runnable version of Syncer, reference to [README.md|https://github.com/zenlint/servicecomb-service-center/blob/master/syncer/README.md] to get what is Service-center Syncer.

The current Syner has a P2P network to ensure that different Service-centers can perform peer-to-peer data synchronization when needed. When data needs to be synchronized between Service-centers, Syner establishs a point-to-point channel through GRPC to ensure that the less impact on network load.

I am going to make syncer to support the following capabilities in the coming PR,
 * Support for other service registration and discovery centers, such as SpringCloud Eureka, Istio, etc.
 * Enhance the reliability of the Syner itself, Syner lifecycle management.

Reference to [TODO.md|https://github.com/zenlint/servicecomb-service-center/blob/master/syncer/TODO.md] to get future plans for Syncer.

It is worth noting that both Syncer and Service-center are loosely coupled in the code and there runtime, therefore, Syncer will not affect the current Service-center.



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