public double getCurrentActiveConns() {
        return counts.containsKey("active") ? counts.get("active").value() : 0.0;
    }
An array of locks to guard the gauges.   This is the same as Guava's Striped, but avoids the dep.
<p>
This can be removed after https://github.com/Netflix/spectator/issues/862 is fixed.
zuul-core/src/main/java/com/netflix/zuul/monitoring/ConnCounter.java