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Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.

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/**
 *  Copyright Terracotta, Inc.
 *
 *  Licensed 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 net.sf.ehcache.util.counter.sampled;

import java.io.Serializable;

/**
 * A counter value at a particular time instance
 * 
 * @author Abhishek Sanoujam
 * @since 1.7
 */
public class TimeStampedCounterValue implements Serializable {
    private final long counterValue;
    private final long timestamp;

    /**
     * Constructor accepting the value of both timestamp and the counter value.
     * 
     * @param timestamp
     * @param value
     */
    public TimeStampedCounterValue(long timestamp, long value) {
        this.timestamp = timestamp;
        this.counterValue = value;
    }

    /**
     * Get the counter value
     * 
     * @return The counter value
     */
    public long getCounterValue() {
        return this.counterValue;
    }

    /**
     * Get value of the timestamp
     * 
     * @return the timestamp associated with the current value
     */
    public long getTimestamp() {
        return this.timestamp;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String toString() {
        return "value: " + this.counterValue + ", timestamp: " + this.timestamp;
    }

}