For Joyanta Sir(Joomla component caching)

$mainframe =& JFactory::getApplication();
                 $caching = $this->params->get('cachetimeline', 1);
                 if($caching){
                     //if caching enabled from
                     $caching = $mainframe->getCfg('caching');
                 }

                 //$caching = 1;  //enable this only test purpose.

                 $cache =& JFactory::getCache('com_mysocialtimeline');
                 $cache->setCaching($caching);
                 $callback = array($timelinehelper, 'getFeed');
                 $output = $cache->call($callback, $socialSitesName, $com_name, $perFeedItems, $totalFeedItems, $feedTimeout,$timeline, $networkWeights,$sortKey,$desc, $this->params, $menu->id);