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Distributed Computing with Go by V.N. Nikhil Anurag

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Concurrent task execution

In the final output of the previous section, we can see that all the tasks in listOfTasks are being executed in serial order, and the last step for maximum concurrency would be to let the order be determined by Go runtime instead of the order in listOfTasks. This might sound like a laborious task, but in reality this is quite simple to achieve. All we need to do is add the go keyword in front of task(&waitGroup):

func main() { var waitGroup sync.WaitGroup // Set number of effective goroutines we want to wait upon waitGroup.Add(len(listOfTasks)) for _, task := range listOfTasks { // Pass reference to WaitGroup instance // Each of the tasks should call on WaitGroup.Done() go task(&waitGroup) // Achieving maximum concurrency ...

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