Apache Dubbo (incubating) Project

Apache Dubbo (incubating) is a high-performance, java based open source RPC framework. Please visit official site for quick start and documentations, as well as Wiki for news, FAQ, and release notes.

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Architecture

Features

• Transparent interface based RPC
• Intelligent load balancing
• Automatic service registration and discovery
• High extensibility
• Runtime traffic routing
• Visualized service governance

Getting started

Maven dependency

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>2.6.2</version>
</dependency>

Defining service interfaces

package org.apache.dubbo.demo;

public interface GreetingService {
    String sayHello(String name);
}

Implement interface in service provider

package org.apache.dubbo.demo.provider;
 
import org.apache.dubbo.demo.GreetingService;
 
public class GreetingServiceImpl implements GreetingService {
    public String sayHello(String name) {
        return "Hello " + name;
    }
}

Starting service provider

package org.apache.dubbo.demo.provider;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import com.alibaba.dubbo.config.ServiceConfig;
import org.apache.dubbo.demo.GreetingService;

import java.io.IOException;
 
public class Provider {

    public static void main(String[] args) throws IOException {
        ServiceConfig<GreetingService> serviceConfig = new ServiceConfig<GreetingService>();
        serviceConfig.setApplication(new ApplicationConfig("first-dubbo-provider"));
        serviceConfig.setRegistry(new RegistryConfig("multicast://224.5.6.7:1234"));
        serviceConfig.setInterface(GreetingService.class);
        serviceConfig.setRef(new GreetingServiceImpl());
        serviceConfig.export();
        System.in.read();
    }
}

Call remote service in consumer

package org.apache.dubbo.demo.consumer;

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ReferenceConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import org.apache.dubbo.demo.GreetingService;

public class Consumer {
    public static void main(String[] args) {
        ReferenceConfig<GreetingService> referenceConfig = new ReferenceConfig<GreetingService>();
        referenceConfig.setApplication(new ApplicationConfig("first-dubbo-consumer"));
        referenceConfig.setRegistry(new RegistryConfig("multicast://224.5.6.7:1234"));
        referenceConfig.setInterface(GreetingService.class);
        GreetingService greetingService = referenceConfig.get();
        System.out.println(greetingService.sayHello("world"));
    }
}

Next steps

• Dubbo user manual - How to use Dubbo and all its features.
• Dubbo developer guide - How to invovle in Dubbo development.
• Dubbo admin manual - How to admin and manage Dubbo services.

Contact

• Mailing list: dev@dubbo.incubator.apache.org (subscription guide)
• Bugs: Issues
• Gitter: Gitter channel
• Twitter: @ApacheDubbo

Contributing

See CONTRIBUTING for details on submitting patches and the contribution workflow.

How can I contribute?

• Take a look at issues with tag called Good first issue or Help wanted.
• Join the discussion on mailing list, subscription guide.
• Answer questions on issues.
• Fix bugs reported on issues, and send us pull request.
• Review the existing pull request.
• Improve the website, typically we need
  • blog post
  • translation on documentation
  • use cases about how Dubbo is being used in enterprise system.
• Improve the dubbo-ops/dubbo-monitor.
• Contribute to the projects listed in ecosystem.
• Any form of contribution that is not mentioned above.
• If you would like to contribute, please send an email to dev@dubbo.incubator.apache.org to let us know!

Reporting bugs

Please follow the template for reporting any issues.

Reporting a security vulnerability

Please report security vulnerability to security@dubbo.incubator.apache.org (private mailing list).

Ecosystem

• Dubbo Website - Apache Dubbo (incubating) official website
• Dubbo Samples - samples for Apache Dubbo (incubating)
• Dubbo Spring Boot - Spring Boot Project for Dubbo
• Dubbo OPS - The reference implementation for dubbo ops (dubbo-admin, dubbo-monitor, dubbo-registry-simple, etc.)

Language

• Node.js
• Python
• Php

License

Apache Dubbo is under the Apache 2.0 license. See the LICENSE file for details.