/*
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.cache.common;
/**
* Strongly typed cache key to be used instead of {@link Object}.
*
* <p> {@link #toString}, {@link #equals} and {@link #hashCode} methods must be implemented.
*/
public interface CacheKey {
/** This is useful for instrumentation and debugging purposes. */
public String toString();
/** This method must be implemented, otherwise the cache keys will be be compared by reference. */
public boolean equals(Object o);
/** This method must be implemented with accordance to the {@link #equals} method. */
public int hashCode();
}