Address Discovery on Apache Dubbo

Using Nacos as the Registry

Mon, 01 Jan 0001 00:00:00 +0000

This example shows dubbo-go’s service discovery feature with Nacos as the registry.

Usage

Specify the registry address in the following way:

ins, _ := dubbo.NewInstance(
	dubbo.WithName("dubbo_registry_nacos_server"),
	dubbo.WithRegistry(
		registry.WithNacos(),
		registry.WithAddress("127.0.0.1:8848"),
	),
	dubbo.WithProtocol(
		protocol.WithTriple(),
		protocol.WithPort(20000),
	),
)

srv, err := ins.NewServer()

How to run

Start Nacos server

Follow this instruction to install and start Nacos server.

Run server

$ go run ./go-server/cmd/server.go

Test if the RPC server works as expected:

Using Zookeeper as a registry

Mon, 01 Jan 0001 00:00:00 +0000

This example shows dubbo-go’s service discovery feature with Zookeeper as registry.

Usage

Specify the registry address as follows:

ins, _ := dubbo.NewInstance(
	dubbo.WithName("dubbo_registry_nacos_server"),
	dubbo.WithRegistry(
		registry.WithZookeeper(),
		registry.WithAddress("127.0.0.1:2181"),
	),
	dubbo.WithProtocol(
		protocol.WithTriple(),
		protocol.WithPort(20000),
	),
)

srv, err := ins.NewServer()

How to run

Start Zookeeper server

This example relies on Zookeeper as the registry; follow the steps below to start a Zookeeper server first.

Start Zookeeper with Docker, run docker run --rm -p 2181:2181 zookeeper or make -f $DUBBO_GO_SAMPLES_ROOT_PATH/build/Makefile docker-up.
Download and start Zookeeper locally on your machine.

Run server

$ go run ./go-server/cmd/server.go

Test RPC server works as expected:

Multiple Registration Centers

Mon, 01 Jan 0001 00:00:00 +0000

A Dubbo application can configure multiple registration centers at different interface dimensions. Multiple registration centers can be used for cluster isolation, migration, and various other scenarios. For a more detailed explanation, refer to the Dubbo Java Multiple Registration Center Documentation.

API Configuration Method

ins, _ := dubbo.NewInstance(
	dubbo.WithRegistry(
	 registryWithID("nacos"),
		registry.WithNacos(),
		registry.WithAddress("127.0.0.1:8848"),
	),
	dubbo.WithRegistry(
	 registryWithID("zookeeper"),
		registry.WithZookeeper(),
		registry.WithAddress("127.0.0.1:2181"),
	),
)

Specify which registration center a service under a specific server should register to: