static int simpleSpamClientDetect_interval = 60000;
static double simpleSpamClientDetect_perSecondThreshold = 2.0; // per IP + URI
static int simpleSpamClientDetect_spamMax;

// ip + uri -> count
static ExpiringHashMap<Pair<S>, Int> simpleSpamClientDetect_ipsAndUris = new ExpiringHashMap(simpleSpamClientDetect_interval);

// returns pair(count, bad)
static Pair<Int, Bool> simpleSpamClientDetect(S clientIP, S uri) {
  Pair<S> pair = pair(clientIP, uri);
  int ipCount = toInt(simpleSpamClientDetect_ipsAndUris.get(pair));
  simpleSpamClientDetect_ipsAndUris.put(pair, ipCount+1);
simpleSpamClientDetect_spamMax = iround(simpleSpamClientDetect_perSecondThreshold*simpleSpamClientDetect_interval/1000);
  ret pair(ipCount, ipCount >= simpleSpamClientDetect_spamMax);
}