Golang テクノロジーは分散システムでメッセージ パッシングをどのように実装しますか?

package main

import (
    "log"

    "github.com/nats-io/nats.go"
)

func main() {
    nc, err := nats.Connect("nats://localhost:4222")
    if err != nil {
        log.Fatalf("Error connecting to NATS: %v", err)
    }
    defer nc.Close()

    nc.Publish("mytopic", []byte("Hello World!"))
}

package main

import (
    "encoding/json"
    "log"

    "github.com/nats-io/nats.go"
)

type Message struct {
    Data string
}

func main() {
    nc, err := nats.Connect("nats://localhost:4222")
    if err != nil {
        log.Fatalf("Error connecting to NATS: %v", err)
    }

    sub, err := nc.Subscribe("mytopic", func(m *nats.Msg) {
        var msg Message
        err = json.Unmarshal(m.Data, &msg)
        if err != nil {
            log.Fatalf("Error unmarshalling message: %v", err)
        }
        log.Printf("Received message: %s", msg.Data)
    })
    if err != nil {
        log.Fatalf("Error creating subscription: %v", err)
    }

    defer sub.Unsubscribe()
}