Magento - Cache Data Collections in Magento. A first approach - Programming Questions - eCommerce Software for Growth

Log In

Username or Email

Password:

Forgot Password

or
Register

Skip to site navigation »
Skip to main content »
Skip to footer content »

Magento Forum

Cache Data Collections in Magento. A first approach

raulsanchez Total Posts: 82 Joined: 2011-02-22 Ignore user	We can cache HTML output easily in Magento http://www.magentocommerce.com/wiki/5_-_modules_and_development/block_cache_and_html_ouput But… what about data collections? This is a very first approach I want to share with the community, just a starting point ‘integrating’ this method http://www.joeyrivera.com/2009/caching-using-phpzend_cache-and-mysql/ in Magento I believe we could do easier (see _getProductCollection() method at Mage_Sales_Model_Entity_Quote_Item_Collection) and surely prettier, meanwhile… STEP 1 /var/cache must have 777 permissions STEP 2 Create Cache.php class in your module (in this example it is under /lib folder) <?php class Collection_Cache { private $_instance; private $_folder = 'var/cache/local/'; public function __construct($time = null) { try { mkdir($this->_folder, 0777); } catch (Exception $e){ // no permissions } $frontendOptions = array( 'lifetime' => $time, 'automatic_serialization' => true ); $backendOptions = array( 'cache_dir' => $this->_folder ); $this->_instance = Zend_Cache::factory('Core', 'File', $frontendOptions, $backendOptions); return; } public function load($id){ return $this->_instance->load($id); } public function save($data){ return $this->_instance->save($data); } public function remove($id){ return $this->_instance->remove($id); } } STEP 3 Then wherever you’re loading your data collections… At the top of the class… `require_once 'Mod_company/Mod_name/lib/Cache.php';` And then at the method where we are getting the collection… `$cache = new Collection_Cache(); $cacheId = $uniqueId; if(! $collection = $cache->load($cacheId)) { /* no cache found, build the collection... / / at the end save it to cache / $cache->save($collection); }` Now you’ll see your cached collection data is under /var/cache/local folder If you don’t specify an expire time as parameter when calling new Collection_Cache()* your data will never expire, letting you the chance to do it everytime you need What do you think? Best regards Signature http://www.viansolutions.com
	Posted: August 15 2011 \| top

raulsanchez Total Posts: 82 Joined: 2011-02-22 Ignore user	In fact, an easier way… `$cache = Mage::app()->getCacheInstance(); $cacheId = $uniqueId; if(! $collection = $cache->load($cacheId)) { /* no cache found, build the collection... / $cache->save(serialize($collection),$cacheId); } else { $collection = unserialize($collection); }` This way our cached data is included in Magento cache Signature http://www.viansolutions.com*
	Posted: August 15 2011 \| top \| # 1

metalim Total Posts: 1 Joined: 2011-08-18 Ignore user	Thanks! Really helpful.
	Posted: August 19 2011 \| top \| # 2

raulsanchez Total Posts: 82 Joined: 2011-02-22 Ignore user	metalim - 19 August 2011 01:01 AM Thanks! Really helpful. I appreciate I was starting to think anybody here cares about caching his data collections… Signature http://www.viansolutions.com
	Posted: August 19 2011 \| top \| # 3

raulsanchez Total Posts: 82 Joined: 2011-02-22 Ignore user	Updated info from http://stackoverflow.com/questions/3755104/how-to-cache-a-collection-in-magento Collections already have some caching built in but they need a little prompting so put this in the constructor of a collection: `$cache = Mage::app()->getCacheInstance(); $prefix = "SomeUniqueValue"; $this->initCache($cache, $prefix, array(Mage_Catalog_Model_Product::CACHE_TAG));` Choose tags appropriate to the content of the collection so that it will be flushed automatically. This way builds an ID based on the query being executed, it is most useful when the collection is filtered, ordered or paged - it avoids a version conflict. Generally this hardly gets used because when you retrieve data you almost always end up displaying it, probably as HTML, so it makes sense to cache the output instead. Block caching is widely used and better documented. Signature http://www.viansolutions.com
	Posted: September 20 2011 \| top \| # 4

Magento Community

Magento Community

Back to top

How can I add " Customer ID" to Info.php?

Combine 2 Forms for productAddToCart.submit()