com.alibaba.metrics.Meter 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 meter metric which measures mean throughput and one-, five-, and fifteen-minute
* exponentially-weighted moving average throughput.
* 一种用于度量一段时间内吞吐率的计量器。例如，一分钟内，五分钟内，十五分钟内的qps指标，
* 这段时间内的吞吐率通过指数加权的方式计算移动平均得出。
*/
public interface Meter extends Metered {
/**
* Mark the occurrence of an event.
* 标记一次事件
*/
void mark();
/**
* Mark the occurrence of a given number of events.
* 标记n次事件
*
* @param n the number of events
*/
void mark(long n);
}