Is there any native library or third party support like ScheduledExecutorService
by java native library at go lang for production use case?
Please find the code snippet in java 1.8 :
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class TaskScheduler {
/**
* @param args
*/
public static void main(String[] args) {
Runnable runnable = ()-> {
// task to run goes here
System.out.println("Hello !!");
};
ScheduledExecutorService service = Executors.newScheduledThreadPool(1);
service.scheduleAtFixedRate(runnable, 0, 1, TimeUnit.SECONDS);
}
}
It will print Hello !!
in every one second.
Go to the Start menu search bar, type in 'task scheduler,' and select the best match. In the Task Scheduler menu, right-click on the Task Scheduler Library, and select New Folder… There, type a name for your folder and click on OK. Now expand the Task Schedule Library.
The scheduling mechanism in Go is combine with three main characters, Goroutine, Processor, and Machine. I'll call it GPM model for short in this note. The task unit for scheduling, like a application-level thread. A Goroutine maintains its executing state, but only can be executed while attach to a Processor.
No need to use 3rd party library to achieve that. Simply take the advantage of goroutine and use available time.Sleep()
API from time
package, then the very same result can be achieved.
Example:
go func() {
for true {
fmt.Println("Hello !!")
time.Sleep(1 * time.Second)
}
}()
Playground: https://play.golang.org/p/IMV_IAt-VQX
As per suggestion from Siddhanta. Here is one example to achieve the same result by using ticker (taken from go documentation page of ticker, with some modifications following your requirement).
done := make(chan bool)
ticker := time.NewTicker(1 * time.Second)
go func() {
for {
select {
case <-done:
ticker.Stop()
return
case <-ticker.C:
fmt.Println("Hello !!")
}
}
}()
// wait for 10 seconds
time.Sleep(10 *time.Second)
done <- true
The ticker time information (the time when the Hello !!
executed) can be taken from ticker.C
channel.
case t := <-ticker.C:
fmt.Println(t)
Playground: https://play.golang.org/p/TN2M-AMr39L
Another simplified example of ticker, taken from https://gobyexample.com/tickers
ticker := time.NewTicker(1 * time.Second)
go func() {
for range ticker.C {
fmt.Println("Hello !!")
}
}()
// wait for 10 seconds
time.Sleep(10 *time.Second)
ticker.Stop()
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