goroutines_mtx.go

package main

import (
	"fmt"
	"math/rand"
	"sync"
	"time"
)

var cache = map[int]int{}
var database = make(map[int]int, 1000)

func main() {
	generateRandomDatabase()

	start := time.Now()

	var wg sync.WaitGroup
	var mtx sync.RWMutex

	for i := 0; i < 10000; i++ {
		wg.Add(1)
		go GetValue(i, &wg, &mtx)
	}

	wg.Wait()
	fmt.Println("Total execution time:", time.Since(start))
}

func generateRandomDatabase() {
	for i := 0; i < len(database); i++ {
		database[i] = rand.Int()
	}
}