Magento how to cache a productCollection
Ive noticed my home page is taking a long time to load - over 6 seconds infact according site24x7.com, so ive been switching elements off to try and determine what is the cause, and it is down to 2 product collection files I have made to show new products and best selling products.
As soon as i remove these from the home page, the page loads in less than .5 seconds.
So, can anyone help with optimising and caching a productCollection? I have APC installed and running on the server, but Im not sure it is caching the files located in app/design/frontend/default/MY_THEME/catalog/product/newproducts.phtml
So, my collection call for best selling (most viewed actually) looks like this;
<?php $storeId = Mage::app()->getStore()->getId(); // return current store id ?>
<?php $_productCollection= Mage::getResourceModel('reports/product_collection')
->addAttributeToSelect('*')
->addStoreFilter($storeId)
->addViewsCount()
->addFieldToFilter('visibility', Mage_Catalog_Model_Product_Visibility::VISIBILITY_BOTH)
->addFieldToFilter('status',Mage_Catalog_Model_Product_Status::STATUS_ENABLED);
$_productCollection->getSelect()->limit(8)
?>
How can I further optimise this?
Answer
Try
$storeId = Mage::app()->getStore()->getId();
$cache = Mage::getSingleton('core/cache');
$key = 'homepage-most-view-' . $storeId;
if(! $data = $cache->load($key)){
$_productCollection= Mage::getResourceModel('reports/product_collection')
->addAttributeToSelect('*')
->addStoreFilter($storeId)
->addViewsCount()
->addFieldToFilter('visibility', Mage_Catalog_Model_Product_Visibility::VISIBILITY_BOTH)
->addFieldToFilter('status',Mage_Catalog_Model_Product_Status::STATUS_ENABLED);
$_productCollection->getSelect()->limit(8)
// get the element you need from $_productCollection and store in $array
$data = serialize($array);
$cache->save(urlencode($data), $key, array("homepage_cache"), 60*60*24);
}
else{
$data = unserialize(urldecode($data));
}
See