Multithreading in Golang with Goroutine

A guide on how to handle multithreading in Golang using Goroutine, allowing efficient parallel processing and CPU optimization.

In this article, we will explore how to use Goroutine to implement multithreading in Golang. Goroutine enables us to perform multiple tasks concurrently in an efficient and straightforward manner.

Golang code

package main

import (
	"fmt"
	"time"
)

// Function to handle the task
func printNumbers() {
	for i := 1; i <= 5; i++ {
		fmt.Printf("Number: %d\n", i)
		time.Sleep(500 * time.Millisecond)
	}
}

func printLetters() {
	for i := 'A'; i <= 'E'; i++ {
		fmt.Printf("Letter: %c\n", i)
		time.Sleep(500 * time.Millisecond)
	}
}

func main() {
	// Launching two Goroutines
	go printNumbers()
	go printLetters()

	// Keep the program running while Goroutines execute
	time.Sleep(3 * time.Second)
	fmt.Println("Multithreading with Goroutine completed!")
}

Detailed explanation

• Functions printNumbers and printLetters: These functions print numbers and letters, respectively.
• go printNumbers() and go printLetters(): Launch two Goroutines to execute these functions concurrently.
• time.Sleep(3 * time.Second) in main(): Keeps the program running for 3 seconds to allow the Goroutines to complete their tasks before the program exits.

System Requirements:

• Golang version 1.15 or later

How to install Golang:

• Visit the Golang website to download and install Golang.

Tips:

• Use Goroutines for asynchronous tasks or parallel processing to optimize performance.
• Employ tools like sync.WaitGroup to manage Goroutines when handling complex concurrent tasks.

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