Develop microservice with Dubbo

Dubbo addresses a series of challenges from development and deployment to governance and operations in enterprise microservices. Dubbo provides a full suite of services for developers, from project creation, development testing, to deployment, visual monitoring, traffic governance, and ecosystem integration.

Development

  • Language Support: Dubbo supports various programming languages including Java, Go, Rust, Node.js, and defines a set of paradigms for microservice development. A corresponding scaffold is available for quickly creating a microservice project skeleton.
  • Deployment: Dubbo applications can be deployed in different environments including virtual machines, Docker containers, Kubernetes, and service mesh architectures.
  • Service Governance: Dubbo provides capabilities like address discovery, load balancing, and traffic control. It also offers an Admin dashboard for visual control and a rich microservice ecosystem.

Creating a Project

The Dubbo Microservices Project Scaffold can be used to quickly create a microservices project. The scaffold can generate a microservice project with necessary dependencies based on the features or components you want.

Developing Services

1. Define the Service

public interface DemoService {
    String hello(String arg);
}

2. Implement Business Logic

@DubboService
public class DemoServiceImpl implements DemoService {
    public String hello(String arg) {
        // your microservice logic here
    }
}

Publishing Services

1. Publish the Service Definition

The service provider needs to publish the service definition as a Jar package to the Maven central repository.

2. Expose the Service

Add Dubbo configuration and start the Dubbo server.

dubbo:
  application:
    name: dubbo-demo
  protocol:
    name: dubbo
    port: -1
  registry:
    address: zookeeper://127.0.0.1:2181

Consuming Services

First, consumers include the DemoService service definition dependency via Maven/Gradle.

<dependency>
    <groupId>org.apache.dubbo</groupId>
    <artifactId>dubbo-demo-interface</artifactId>
    <version>3.2.0</version>
</dependency>

Then, programmatically inject the remote Dubbo service instance.

@Bean
public class Consumer {
    @DubboReference
    private DemoService demoService;
}

Deployment

Dubbo native services can be packaged and deployed to cloud-native infrastructures like Docker containers, Kubernetes, and service meshes.

Governance

For service governance, most applications just need to add the following configuration. Dubbo will then have address discovery and load balancing capabilities.

dubbo:
  registry:
    address: zookeeper://127.0.0.1:2181

Deploy and open the Dubbo Admin Dashboard, and you will see the service deployment and invocation data.

Dubbo Admin can also improve development and testing efficiency through additional capabilities like:

  • Document management for regular services and IDL documents
  • Service testing & service Mock
  • Service status inquiry

For more complex microservices scenarios, Dubbo also provides more advanced governance features, including:

  • Traffic governance
  • Dynamic configuration
  • Rate limiting and degradation
  • Data consistency
  • Observability
  • Multi-protocol
  • Multiple registries
  • Service mesh

This guide provides an overview of the workflow for developing microservices with Dubbo. For detailed step-by-step instructions, please refer to:

Deployment

Dubbo’s native services can be packaged and deployed in various cloud-native infrastructures and microservices architectures, including Docker containers, Kubernetes, and Service Mesh.

For examples of deployment in different environments, refer to:

Governance

For service governance, most applications only need to add the following configuration, and the Dubbo application will have address discovery and load balancing capabilities.

dubbo:
  registry:
    address: zookeeper://127.0.0.1:2181

Once deployed and the Dubbo Admin Console is opened, you can see the deployment and invocation data of services in the cluster.

Admin

In addition, Dubbo Admin can also enhance R&D and testing efficiency through the following capabilities:

  • Document management, providing general services and IDL document management.
  • Service testing & Service Mock.
  • Service status inquiry.

For more complex microservices practice scenarios, Dubbo also offers many more advanced service governance features. For more details, please refer to the documentation, including:

  • Traffic governance
  • Dynamic configuration
  • Rate limiting and degradation
  • Data consistency
  • Observability
  • Multi-protocol
  • Multi-registry centers
  • Service Mesh

Last modified October 18, 2023: Translate part features overview docs (#2836) (c3822a9e2ef)