How to terminate goroutines in golang

How to terminate goroutines in golang?

Method 1: Using Channels to Signal Termination

package main

import (
    "fmt"
    "time"
)

func performTask(terminateChan <-chan bool) {
    for {
        select {
        case <-terminateChan:
            fmt.Println("Task terminated by channel")
            return
        default:
            fmt.Println("Task is running")
            time.Sleep(time.Second)
        }
    }
}

func main() {
    terminateChan := make(chan bool)

    go performTask(terminateChan)

    time.Sleep(5 * time.Second)
    terminateChan <- true
    time.Sleep(time.Second)
    fmt.Println("Main Goroutine exited")
}