com.alibaba.metrics.Histogram Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.metrics;
/**
* A metric which calculates the distribution of a value.
* 直方分布指标，例如，可以用于统计某个接口的响应时间，可以展示50%, 70%, 90%的请求响应时间落在哪个区间内
*
* @see Accurately computing running
* variance
*/
public interface Histogram extends Metric, Sampling, Counting {
/**
* Adds a recorded value.
* 将某个整型值添加到
*
* @param value the length of the value
*/
void update(int value);
/**
* Adds a recorded value.
*
* @param value the length of the value
*/
void update(long value);
}