magento default cache using

http://blog.belvg.com/using-default-magento-cache.html

Magento uses the following cache model: Mage::getModel(‘core/cache’) and 4 main methods:

    save($value, $key, $tags = array(), $lifeTime=null);
    load($key);
    remove($key);
    clean($tags = array();


Saving to cache: $key, $tags = array(), $lifeTime=null):
Example: Mage::app()->getCache()->save(json_encode($this->results), ‘mycache_info_’ . $query, array(‘MYCACHE_CACHE’), $lifetime);
Where: $value – the data you need to cache
$key – a unique key, which can provide the cached data.  As a rule it consists of a dynamic and static parts.
For example: ‘mycache_info_’ is a statics part; As a dynamic part it is possible to use the search query $query
$tags – tags that are applied for clearing cache
$lifeTime – life time in seconds(刚开始代码里给设置了10， 老是无法取到值， 很郁闷)


Loading from cache: load( $key)
Example: Mage::app()->getCache()->load(‘mycache_info_’ . $query);
Where: $query: a dynamic parameter ( for example search query)


Cleaning cache by key: remove( $key)
Example: Mage::app()->getCache()->remove(‘mycache_info_’ . $query);
Deleting from cache only the information defined by $key


Clearing cache by tags: clean($tags = array())
Example: Mage::app()->getCache()->clean(array(‘MYCACHE_CACHE’));

Removing all the data which is defined by a specific tag: for example ‘MYCACHE_CACHE’

<?php
class Alanstormdotcom_Helloworld_IndexController extends Mage_Core_Controller_Front_Action {
    public function indexAction() {
        $cache = Mage::app()->getCache();
        echo $cache->save('cccccccccccccccc', "nick_date", array("nicks_cache"), null);




//        $this->loadLayout();
//        $this->renderLayout();
    }


    public function getCacheAction(){
        $cache = Mage::app()->getCache();
        $v = $cache->load("nick_date");
        $t = Mage::app()->getCacheInstance()->getTypes();
        var_dump($t);
  


    }
}