Storing MANY structs in memory in Go

objects.go

package main

import (
	"log"
	"time"
)

type Kitty struct {
	id    uint
	owner string
}

// how many objects we are creating
const limit = 1e6

func main() {
	kitties := make([]*Kitty, 0, limit)
	log.Println("oh hi!")
	t1 := time.Now()
	for i := 1; i < limit-1; i++ {
		kitties = append(kitties, &Kitty{uint(i), "kornelius"})
	}
	log.Printf("%s -- done populating -- %d %s", time.Now().Sub(t1), kitties[1e5].id, kitties[1e5].owner)
	t1 = time.Now()
	// some dummy calculation over the whole set
	// avgLen := float64(len(kitties[1e5].owner))
	counter := 0
	for _, k := range kitties {
		if k.id > 0 {
			counter++
		}
		// avgLen = float64(len(k.owner)) / avgLen
	}
	// log.Printf("%s -- average kitty name length: %f", time.Now().Sub(t1), avgLen)
	log.Printf("%s -- kitty brute count: %d", time.Now().Sub(t1), counter)
	t1 = time.Now()
	time.Sleep(time.Second * 12)
}

$ go run main.go
2018/09/06 14:46:26 oh hi!
2018/09/06 14:46:26 127.415211ms -- done populating -- 100001 kornelius
2018/09/06 14:46:26 2.757098ms -- kitty brute count: 999998