<dubbo:service interface="com.example.UserService" loadbalance="random"> </dubbo:service> UserService userService = referenceConfig.get(); userService.getUser(); <dubbo:service interface="com.example.UserService" loadbalance="random"> </dubbo:service> <dubbo:service interface="com.example.UserService" loadbalance="roundrobin"> </dubbo:service> <dubbo:service interface="com.example.UserService" loadbalance="leastactive"> </dubbo:service>