pandora-metrics/dist/common/metrics/Histogram.d.ts

## Overview

import { IReservoir, ReservoirType } from '../Reservoir';
import { BucketCounter } from './BucketCounter';
import { Counting, Metric, Sampling, Snapshot } from '../domain';
/**
 * 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 <a href="http://www.johndcook.com/standard_deviation.html">Accurately computing running
 *      variance</a>
 */
export interface IHistogram extends Metric, Sampling, Counting {
    /**
     * Adds a recorded value.
     * 将某个整型值添加到
     *
     * @param value the length of the value
     */
    update(value: number): any;
}
export declare class BaseHistogram implements IHistogram {
    reservoir: IReservoir;
    type: string;
    count: BucketCounter;
    constructor(type?: ReservoirType | IReservoir, interval?: number, numberOfBucket?: number);
    update(value: number): void;
    getCount(): number;
    getSnapshot(): Snapshot;
}