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https://issues.apache.org/jira/browse/DUBBO-33?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jun Liu closed DUBBO-33.
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    Resolution: Fixed

> GSoC 2019 topics for Apache Dubbo project
> -----------------------------------------
>
>                 Key: DUBBO-33
>                 URL: https://issues.apache.org/jira/browse/DUBBO-33
>             Project: Apache Dubbo
>          Issue Type: Task
>            Reporter: Jun Liu
>            Priority: Major
>              Labels: GSoC2019
>
> * Programming language: Java
> * Area: RPC Framework
> * Keywords: RPC, HTTP2, LoadBalance, Circuit Breaker, Microservices, Cloud 
> Native, Reactive
> Apache Dubbo (incubating) is a high-performance RPC framework that has 
> already been tested in widespread production in large scales. The Dubbo 
> community has grown a lot with high speed since joined ASF in 2018, with 100+ 
> new contributors and 20+ new committers joined.
> This year with GSOC, we will focus on research of some core features Dubbo 
> needed to working as a core component in the modern distributed system, these 
> include development experience,  stability, maintenance, performance and 
> integrating with new tech trends.  In terms of technology topics, you will 
> have the practical opportunity to polish your skills in Microservice 
> Architecture Observability and Reliability, Cloud Native, Reactive and so on. 
> Actually, some of these topics are happening and discussing in the community 
> and some developers may have already started their work. But given the 
> student's zero backgrounds in Dubbo, in order to quick start, we will try to 
> make these topics into practical issues with detailed proposals and 
> expectations. 
> We hope that the attendees can learn some of the key concepts of Microservice 
> and RPC and get the opportunity to build some of the core features of Dubbo. 
> And from the community's perspective, we cannot wait to see your intelligence 
> and bring the community some fresh ideas.
> h2. Developement Experience
> h2. 
> * Fluent -style Builder API build on ServiceConfig, ReferenceConfig, ...
> * Easy-to-use Annotation
>   * <dubbo:service application="demo" registry="zookeeper" />
>   * Method-level annotation
>   * Annotation ans XML
> * Put application-level configurations to a unified place, following the 
> path-based convention.
>   - dubbo.application.qos.enble=6000
>   - dubbo.service.shutdown.timeout
>   - dubbo.heartbeat
>   - dubbo.reconnect
>   - ...
> h2. Performance Tuning
> * Service Discovery: avoid duplicate address computation, avoid recreate of 
> URL.
> * Share thread pool on the consumer side.
> * Refine RPC protocol, avoid useless properties on the wire.
> * ...
> h2. Resilience and Stability
> - Circuit Breaker: Instance and Cluster
> - LoadBalance Policies: for example P2C, JWS
> - Adaptive Concurrency Limit
> - Heartbeat works as a mechanism of recognizing unhealthy connections
> - Deadlines
> - Fault Injection
> - Thread Pool Isolation
> h2. Observability
> * Metrics counted and showed on Dubbo's own dashboard
> * Being able to deliver metrics to open sourced projects like Prometheus.
> h2. SPI Extension
> * Service Directory: Consul, Etcd, ...
> * Config Center: Consul, Etcd, ... 
> * Protocol: http2, ...
> h2. Cloud Native and Reactive
> * Built-in http2 support
> * Interoperability with Microservice Architecture, for example, Spring Cloud.
> * Adapt to K8S and ServiceMesh
> * Fully async stack
> * Reactive across processes.



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