$cache = Mage::app()->getCache();
        if(!$cache->load('itserv_feed_collection')) {
           $collection = Mage::getModel('catalog/product')->getCollection()
                            ->addFieldToFilter('visibility', Mage_Catalog_Model_Product_Visibility::VISIBILITY_BOTH)
                            ->addFieldToFilter('status', Mage_Catalog_Model_Product_Status::STATUS_ENABLED)
                            ->addAttributeToSelect(Mage::getSingleton('catalog/config')->getProductAttributes())
                            ->addMinimalPrice()
                            ->addTaxPercents()
                            ->addStoreFilter()
                            ->addAttributeToSort('entity_id', 'desc');

        // CategoryFilter
        $collection = $this->categoryFilter($collection);

        // getNumProduct
       $collection->setPageSize($this->getWidgetCfg('limit'));

            $cache->save(serialize($collection), "itserv_feed_collection", array("itserv_feed_collection"), 120);



            return $collection;
        }else {
            $collection = unserialize($cache->load('itserv_feed_collection'));
               return $collection;
        }
       // return $collection;