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 /*
  * Copyright (C) 2011 The Guava Authors
  *
  * 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 com.google.common.cache;
Calculates the weights of cache entries.

Author(s):
Charles Fry
Since:
11.0
public interface Weigher<K, V> {

  
Returns the weight of a cache entry. There is no unit for entry weights; rather they are simply relative to each other.

Returns:
the weight of the entry; must be non-negative
  int weigh(K key, V value);
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