/*
* 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 org.apache.ignite.cache.query;
import org.apache.ignite.internal.processors.cache.query.CacheQuery;
/**
* Cache query metrics used to obtain statistics on query. Metrics for particular query
* can be get via {@link CacheQuery#metrics()} method or aggregated metrics for all queries
* via {@link CacheQuery#metrics()}.
*/
public interface QueryMetrics {
/**
* Gets minimum execution time of query.
*
* @return Minimum execution time of query.
*/
public long minimumTime();
/**
* Gets maximum execution time of query.
*
* @return Maximum execution time of query.
*/
public long maximumTime();
/**
* Gets average execution time of query.
*
* @return Average execution time of query.
*/
public double averageTime();
/**
* Gets total number execution of query.
*
* @return Number of executions.
*/
public int executions();
/**
* Gets total number of times a query execution failed.
*
* @return Total number of times a query execution failed.
*/
public int fails();
}