<?php
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/**
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* PhalApi_Cache_Multi 组合模式下的多级缓存
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*
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* - 可以自定义添加多重缓存，注意优先添加高效缓存
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* - 最终将委托给各级缓存进行数据的读写，其中读取为短路读取
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*
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* @package PhalApi\Cache
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* @license http://www.phalapi.net/license GPL 协议
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* @link http://www.phalapi.net/
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* @author dogstar <chanzonghuang@gmail.com> 2015-02-22
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*/
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class PhalApi_Cache_Multi implements PhalApi_Cache {
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protected $caches = array();
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public function addCache(PhalApi_Cache $cache) {
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$this->caches[] = $cache;
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}
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public function set($key, $value, $expire = 600) {
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foreach ($this->caches as $cache) {
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$cache->set($key, $value, $expire);
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}
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}
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public function get($key) {
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foreach ($this->caches as $cache) {
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$value = $cache->get($key);
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if ($value !== NULL) {
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return $value;
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}
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}
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return NULL;
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}
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public function delete($key) {
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foreach ($this->caches as $cache) {
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$cache->delete($key);
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}
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}
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}
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