Cache statsd client so it doesn't do a DNS lookup
        over and over

def client(cls, config):
        """
        Cache statsd client so it doesn't do a DNS lookup
        over and over
        """
        if not hasattr(cls, "_client"):
            cls._client = statsd.StatsClient(config.STATSD_HOST, config.STATSD_PORT, config.STATSD_PREFIX)
        return cls._client