this.bucketSizeInMillis = bucketSizeInMillis;
            this.buckets = new WindowBucket[numberOfBuckets];
            for (int i = 0; i < numberOfBuckets; i++) {
                buckets[i] = new WindowBucket();
            }
        }

        public synchronized void recordSuccess(long responseTimeMs) {
            getCurrentBucket().recordSuccess(responseTimeMs);
        }