# memcache 形式的緩存 memcache 形式的緩存 ## **php 擴展需求** > 需要開啟?php_memcache?擴展 Memcache 相關知識： >查看Memcache介紹 ## **修改全局配置 phpGrace/config.php** ~~~ 'cache'?=>?array( ????'type'??????????=>?'memcache', ????//以下配置為memcache及redis類型緩存的必須設置 ????'host'??????????=>?'127.0.0.1',?//主機地址 ????'port'??????????=>?'11211',?????//端口 ????'pre'???????????=>?'grace_'?????//緩存變量前綴 ) ~~~ ## **調用演示** ~~~ <?php class?indexController?extends?grace{ ????public?function?index(){ ????????$this->cache('test',?12,?'__getData'); ????????p($this->test); ????} ???? ????public?function?__getData(){ ????????echo?'無緩存，進行查詢...<br?/>'; ????????$db?=?db('persons'); ????????$persons?=?$db->fetchAll(); ????????return?$persons; ????} ???? ????public?function?t(){ ????????$this->removeCache('test',?'12'); ????} } ~~~