limiter

var (
	// same IP can submit x tasks per 24 hours
	IP = &Limiter{
		name: "limitIP",
		max:  10,
		c:    cache.New(day, time.Hour),
	}

	// a task can sent x emails before the resume
	Sent = &Limiter{
		name: "limitSent",
		max:  5,
		c:    cache.New(day*365, day*365),
	}

	// one address can receive x emails per 24 hours
	Recv = &Limiter{
		name: "limitRecv",
		max:  50,
		c:    cache.New(day, time.Hour),
	}
)

var (
	ErrExceeded = errors.New("can not handle your request due to limiter")
)