rate limiter

ratelimit

(function currentRate(seconds, currenttime) {
	var i = seconds.length-1,
		limit,msgnumber,deltafromstart, rate, deltaseconds, previousseconds = currenttime;
	for(var l = seconds.length; i > 0 ; i = i - 1) {
		msgnumber = l - i;
		deltafromstart = currenttime - seconds[i];
		deltaseconds = previousseconds - seconds[i];
		previousseconds = seconds[i];
		limit = rateLimit(msgnumber);
		rate = deltafromstart / msgnumber;
		console.log(
			'msgnumber: %d secs: %d  diff: %d rate: %d cl: %d limit: %s', 
			msgnumber, deltafromstart, deltaseconds, rate, limit, deltaseconds > limit?'OK':'LIMIT');
	}
	function rateLimit(x) {
		return Math.min((4.1484 * Math.log(x) + 1.02242), 20);
	}
})([1,2,3,4,5,6,7,8,9,10,11,12,13,15,18,22,26,32,41,46,49,55,61,67,69,76,83,92,98,105,109,113,117], 120) // heavily rate limited