package main

import (
    "fmt"
    "time"

    "golang.org/x/time/rate"
)

func main() {
    // every 1 action per second
    {   
        limiter := rate.NewLimiter(1, 1)
        for i := 0; i < 5; i++ {
            if limiter.Allow() {
                fmt.Printf("act1 ")
            }   
            fmt.Println("wait")
            time.Sleep(time.Second)
        }   
    }   
    // every 3 action per 5 second
    limiter := rate.NewLimiter(rate.Every(5*time.Second), 3)
    for i := 0; i < 10; i++ {
        if limiter.Allow() {
            fmt.Printf("act2 ")
        }   
        fmt.Println("wait")
        time.Sleep(time.Second)
    }   

    // return a token back to limiter
    time.Sleep(5 * time.Second)

    for i := 0; i < 10; i++ {
        if limiter.Allow() {
            fmt.Printf("act2 ")
        }
        fmt.Println("wait")
        time.Sleep(time.Second)
    }
}