How does Dubbo achieve remote invocation?

Dubbo is a distributed service framework that enables remote invocation. Here are the steps to implement remote invocation using Dubbo:

1. Define interface: First, it is necessary to define the interface for remote calls, including the methods and parameters of the interface.
2. Implement the interface: Implement specific business logic based on the defined interface.
3. Configure Dubbo: In the Dubbo configuration file, set up relevant information for providers and consumers, including service interface, port number, and registry center.
4. Service provider: The service provider publishes the implemented interface as a service.
5. Start the consumer: initiate the consumer, using Dubbo’s proxy class to invoke remote services.
6. Registry Center: Dubbo utilizes a registry center to manage the relationship between service providers and consumers, with options such as ZooKeeper being available for use.
7. Remote invocation: Using Dubbo’s proxy class, the consumer’s call request is sent to the provider, where the provider executes the corresponding business logic and returns the result to the consumer.

In summary, the core steps of implementing remote invocations in Dubbo include defining interfaces, implementing interfaces, configuring Dubbo, starting providers and consumers, and using a registry to manage the relationship between service providers and consumers.