/**
  * Schedules an action of getting product information in the background.
  * 
  * @since       3
  * @action      schedule        aal_action_api_get_product_info
  */
 public static function getProductInfo($sAssociateID, $sASIN, $sLocale, $iCacheDuration)
 {
     $_oOption = AmazonAutoLinks_Option::getInstance();
     if (!$_oOption->isAPIConnected()) {
         return false;
     }
     $_bScheduled = self::_scheduleTask('aal_action_api_get_product_info', array($sAssociateID, $sASIN, $sLocale, $iCacheDuration));
     if (!$_bScheduled) {
         return $_bScheduled;
     }
     // Loads the site in the background. The method takes care of doing it only once in the entire page load.
     AmazonAutoLinks_Shadow::see();
     return true;
 }
 /**
  * 
  * @callback        action      shutdown
  */
 public function _replyToScheduleUpdatingCaches()
 {
     if (empty($GLOBALS['aAmazonAutoLinks_APIRequestURIs'])) {
         return;
     }
     $_iScheduled = 0;
     foreach ($GLOBALS['aAmazonAutoLinks_APIRequestURIs'] as $aExpiredCacheRequest) {
         // Schedules the action to run in the background with WP Cron.
         $_iScheduled += $this->_scheduleCacheRenewal($aExpiredCacheRequest);
     }
     if ($_iScheduled) {
         AmazonAutoLinks_Shadow::see();
     }
 }