Registry : The registry center responsible for service registration and discovery in dubbo-go
Consumer : The service consumer that calls remote services
Provider : The service provider that exposes services
Process Description
0. register : When the service provider starts, it will automatically register its services with the registry center
1. subscribe : The service consumer will subscribe to the services it needs from the registry center upon starting
2. notify : The registry center returns service registration information to the service consumer. When the subscribed service changes, the change data will be pushed to the consumer
3. invoke : The service consumer selects a suitable service address based on the service addresses obtained from the registry center and initiates a request after applying the load balancing algorithm