Question: Why time.After instead of time.Sleep ?

[Reddy Prasad D]

I learned lot from your article on load balancer. I see you used select with time.After to retry

simplelb/main.go

Lines 185 to 192 in fd45a98

 if retries < 3 { 
 	select { 
 	case <-time.After(10 * time.Millisecond): 
 		ctx := context.WithValue(request.Context(), Retry, retries+1) 
 		proxy.ServeHTTP(writer, request.WithContext(ctx)) 
 	} 
 	return 
 } 

Why not just use time.Sleep ? Is there any difference between time.Sleep and select with time.After ?

[Kasun Vithanage]

Main purpose to add time.After to have a flexible structure to run other concurrent tasks in the error handler.

It's ok to use time.Sleep as well, in that case, we cant interrupt it