Interface Weigher

guava/src/com/google/common/cache/Weigher.java:25–36

Calculates the weights of cache entries. @author Charles Fry @since 11.0

 * @since 11.0
 */
@GwtCompatible
@FunctionalInterface
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.
   *
   * @return the weight of the entry; must be non-negative
   */
  int weigh(K key, V value);
}