goroutine 5 - Using github.com/Jeffail/tunny (Third-party Library)

 package main

import (

"fmt"

"time"

"github.com/Jeffail/tunny"

)

func main() {

const numTasks = 50

// Create pool with 10 workers

pool := tunny.NewFunc(10, func(payload interface{}) interface{} {

taskID := payload.(int)

// Simulate work

time.Sleep(time.Millisecond * time.Duration(100+taskID*10))

return fmt.Sprintf("Task %d completed", taskID)

})

defer pool.Close()

// Submit tasks

results := make([]interface{}, numTasks)

for i := 1; i <= numTasks; i++ {

go func(taskID int) {

results[taskID-1] = pool.Process(taskID)

}(i)

}

// Wait for tasks (simple wait for demo)

time.Sleep(3 * time.Second)

// Count completed tasks

completed := 0

for _, result := range results {

if result != nil {

completed++

fmt.Println(result.(string))

}

}

fmt.Printf("\nSummary: %d out of %d tasks completed\n", completed, numTasks)

}