What's new in Apache Dubbo 3.x?

New Service Discovery Mechanism

• Performance improvements

• Support for connecting with other microservices such as Spring Cloud, Kubernetes, gRPC, etc.

Triple: The new protocol based on HTTP/2

• Compatible with gRPC

• Multi-language friendly: You can use Protobuf to encode data

• Support for streams such as Request Stream, Response Stream, and Bidirectional Stream.

Cloud-Native

• Deployment of Dubbo 3.x Applications in Kubernetes, VM, and Container.

Package distribution

• Dubbo 3.x only includes the core dependency package and now the user has to include each optional dependency.

Example

<properties>
    <dubbo.version>3.0.0</dubbo.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo</artifactId>
        <version>${dubbo.version}</version>
    </dependency>

    <dependency>
        <groupId>org.apache.dubbo</groupId>
        <artifactId>dubbo-registry-redis</artifactId>
        <version>${dubbo.version}</version>
    </dependency>
</dependencies>

Removed dependencies

• org.eclipse.collections:eclipse-collections

• com.google.guava:guava

Dependency changes

• Upgrade to Jetty 9.4.43.v20210629

• Upgrade to Apollo Client 1.8.0

• Upgrade to Snakeyaml 1.29

• Upgrade to Tomcat Embed 8.5.69

• Upgrade to Nacos Client 2.0.2

• Upgrade to Swagger 1.5.24