org.apache.jackrabbit.oak.cache.EmpiricalWeigher Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.jackrabbit.oak.cache;
import com.google.common.cache.Weigher;
/**
* Determines the weight of object based on the memory taken by them. The memory estimates
* are based on empirical data and not exact
*/
public class EmpiricalWeigher implements Weigher {
@Override
public int weigh(String key, CacheValue value) {
int size = 168; // overhead for each cache entry
size += 48 + key.length() * 2; // string key
size += value.getMemory(); // value
return size;
}
}