Reg Wait time in Go

Getting Help
1

Hi,
I need to validate few conditions in my application every 0 to 5 seconds? Can anyone help how to write code for wait for 0 to 5 seconds?

Thanks,
Alex.

2

time.Sleep(0 to 5 * time.Second)

1 Like
3

Hi,

It depends if you need to run code 0 to 5 seconds after a function is called (it can last some time) or if you need to call a function every 0 to 5 seconds even if last call is not finished to run. What are you looking for ?
If you need strictly to run a validation every 5 seconds however the validation lasts you could need something more elaborated like :

package main

import "time"
import "fmt"

func validate(c1 chan <- string) {
	time.Sleep(2 * time.Second)
	c1 <- "result"
}


func scheduleValidation (c1 chan <- string) {

	go func () {
		 <-time.After(5 * time.Second)
		 fmt.Println(time.Now())
		 scheduleValidation(c1)
		 validate(c1)
	} ()

}
func main() {
		c1 := make(chan string)
		scheduleValidation(c1)
			
		for {
			select {
			case r := <- c1:
				fmt.Println(r)
			}
		}
}
1 Like
4

Thanks Nobbz

5

Why dont you just use a time.Ticker?

6

I think that Timer and Ticker are different with regard to an important concern. From the documentation I read about Ticker : “It adjusts the intervals or drops ticks to make up for slow receivers.” That sounds weird, it could drop some ticks. I prefer to assure the regularity unless not needed.

7

Well, but your implementation might cause overlapping validations, which might be just another bad thing.

8

Yes and no, it depends how you chunk your validation batch. But yes, you have to be careful.

9

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