Sample Go app to mass import 1M keys in redis

foo.go

package main

import (
	"fmt"
	"log"
	"net"
	"runtime"
	"time"

	"github.com/garyburd/redigo/redis"
	"github.com/twinj/uuid"
)

const numKeys = 1000000
var uuids [numKeys]string
var client redis.Conn

func prepareUUids() {
	for i := 0; i < numKeys; i++ {
		uuids[i] = uuid.NewV4().String()
	}
}

func createClient() {
	c, err := net.Dial("unix", "/tmp/redis.sock")
	if err != nil {
		log.Fatal(err)
		return
	}

	client = redis.NewConn(c, 10*time.Second, 10*time.Second)
}

func massImport() {
	for i := 0; i < numKeys; i++ {
		client.Send("SET", uuids[i], uuids[i])
	}

	client.Flush()
}

func closeClient() {
	client.Close()
}

func main() {
	runtime.GOMAXPROCS(8)

	prepareUUids()
	createClient()
	start := time.Now()
	massImport()
	elapsed := time.Since(start)
	fmt.Println("Took ", elapsed)
	closeClient()
}