consumer.go

package main

import (
	"log"
	"sync"

	"github.com/bitly/go-nsq"
)

func main() {
	wg := &sync.WaitGroup{}
	wg.Add(1)

	config := nsq.NewConfig()

	q, err := nsq.NewConsumer("test-channel", "test", config)
	if err != nil {
		log.Println(err)
		return
	}

	q.AddHandler(nsq.HandlerFunc(func(message *nsq.Message) error {
		log.Printf("Got a message: %v", message)
		message.Finish()
		wg.Done()
		return nil
	}))

	if err = q.ConnectToNSQLookupd("127.0.0.1:4161"); err != nil {
		log.Println(err)
	}

	wg.Wait()
}

producer.go

package main

import (
	"log"

	"github.com/bitly/go-nsq"
)

func main() {
	config := nsq.NewConfig()

	w, err := nsq.NewProducer("127.0.0.1:4150", config)
	if err != nil {
		log.Println(err)
		return
	}

	if err = w.Publish("test-channel", []byte("this is a test")); err != nil {
		log.Println(err)
		return
	}

	w.Stop()
}