content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.cassandra.cache;
  
  import java.util.Iterator;
  
  /**
   * This is similar to the Map interface, but requires maintaining a given capacity
   * and does not require put or remove to return values, which lets SerializingCache
   * be more efficient by avoiding deserialize except on get.
   */
  public interface ICache<K, V> extends CacheSize
  {
      public void put(K key, V value);
  
      public boolean putIfAbsent(K key, V value);
  
      public boolean replace(K key, V old, V value);
  
      public V get(K key);
  
      public void remove(K key);
  
      public void clear();
  
      public Iterator<K> keyIterator();
  
      public Iterator<K> hotKeyIterator(int n);
  
      public boolean containsKey(K key);
  }
  