The emlog template adds a data cache to the custom list (read list acceleration effect)

stay Emlog template Sometimes, we need to display some custom lists, such as article categories, tag clouds, friendship links, etc. These lists usually obtain data from the database and Template The engine renders the displayed. However, for some frequently updated lists, getting data from the database and rendering each time may affect performance. To solve this problem, we can consider adding the data cache function in the template.

Here is a complete Emlog template The code function that adds data cache to the custom list in can be directly copied to emlog Module in the template folder php File, and then write the calling code at the required location of the emlog template to accelerate the reading list of the emlog template.

 <? php //Read article list write cache //Call method: lanye_Listcache ('1,2,3 ','20', 'listcache'); //There are three parameters. The first is the classification ID, the second is the number of reads, and the third is the cache file name function lanye_Listcache($sortid = 0, $lognum = '10', $cachename = 'listcache'){ global $CACHE; $db = Database::getInstance(); if($sortid){$query = "and sortid in ($sortid)";}else{$query = '';} $sql = "select * from ". DB_PREFIX."blog WHERE type='blog' and hide='n' and checked='y' $query ORDER BY `date` DESC LIMIT 0,$lognum"; $listcache = $CACHE->readCache($cachename); if(empty($listcache)){ $list = $db->query($sql); $listcache = array(); while($row = $db->fetch_array($list)){ $listcache[] = $row; echo '<li><a href="'. Url::log($row['gid']).' " title="'.$ row['title'].' " target="_blank">'.$row['title'].'</a></li>'; } $cacheData = serialize($listcache); $CACHE->cacheWrite($cacheData, $cachename); }else{ foreach($listcache as $row){ echo '<li><a href="'. Url::log($row['gid']).' " title="'.$ row['title'].' " target="_blank">'.$row['title'].'</a></li>'; } } }