org.apache.jena.atlas.lib.cache.CacheInfo Maven / Gradle / Ivy

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This module contains non-RDF library code and the common system runtime.

There is a newer version: 5.2.0

/*
 * 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.jena.atlas.lib.cache;

import com.github.benmanes.caffeine.cache.stats.CacheStats;

/**
 * Cache statistics.
 * Simplified version of Caffein/Guava CacheStats.
 * */
public class CacheInfo {
    public final long requests;
    public final long hits;
    public final long misses;
    public final double hitRate;

    public CacheInfo(CacheStats stats) {
        this(stats.requestCount(), stats.hitCount(), stats.missCount(), stats.hitRate() ) ;
    }

    public CacheInfo(long requests, long hits, long misses, double hitRate) {
        this.requests = requests ;
        this.hits = hits ;
        this.misses = misses ;
        this.hitRate = hitRate ;
    }

    @Override
    public String toString() {
        return String.format("count=%,d  hits=%,d  misses=%,d  rate=%.1f",
                             requests, hits, misses, hitRate) ;
    }
}