static int simpleSpamClientDetect2_interval = 60000;
static double simpleSpamClientDetect2_perSecondThreshold = 2.0; // per IP + URI
static int simpleSpamClientDetect2_spamMax;

// ip + uri -> time, count
static Map<Pair<S>, Pair<Long, Int>> simpleSpamClientDetect2_ipsAndUris = synchroMap();

// returns pair(count, bad)
static Pair<Int, Bool> simpleSpamClientDetect2(S clientIP, S uri) {
  Pair<S> pair = pair(clientIP, uri);
  Pair<Long, Int> value = simpleSpamClientDetect2_ipsAndUris.get(pair);
  if (value == null || now() > value.a+simpleSpamClientDetect2_interval)
    simpleSpamClientDetect2_ipsAndUris.put(pair, value = pair(now(), 1));
  else
    value.b++;
  simpleSpamClientDetect2_spamMax = iround(simpleSpamClientDetect2_perSecondThreshold*simpleSpamClientDetect2_interval/1000);
  ret pair(value.b, value.b >= simpleSpamClientDetect2_spamMax);
}