001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    package org.apache.shiro.cache;
020    
021    /**
022     * A CacheManager provides and maintains the lifecycles of {@link Cache Cache} instances.
023     *
024     * <p>Shiro doesn't implement a full Cache mechanism itself, since that is outside the core competency of a
025     * Security framework.  Instead, this interface provides an abstraction (wrapper) API on top of an underlying
026     * cache framework's main Manager component (e.g. JCache, Ehcache, JCS, OSCache, JBossCache, TerraCotta, Coherence,
027     * GigaSpaces, etc, etc), allowing a Shiro user to configure any cache mechanism they choose.
028     *
029     * @author Les Hazlewood
030     * @since 0.9
031     */
032    public interface CacheManager {
033    
034        /**
035         * Acquires the cache with the specified <code>name</code>.  If a cache does not yet exist with that name, a new one
036         * will be created with that name and returned.
037         *
038         * @param name the name of the cache to acquire.
039         * @return the Cache with the given name
040         * @throws CacheException if there is an error acquiring the Cache instance.
041         */
042        public <K, V> Cache<K, V> getCache(String name) throws CacheException;
043    }