public function getExpressionDetailByEmotion($emotion)
 {
     $cache_id = "_model_expression";
     if (($list = object_cache_get($cache_id)) === false) {
         $res = $this->getAllExpression();
         $list = $res;
         object_cache_set($cache_id, $list);
     }
     return $list[$emotion];
 }
 public function _setWeiboCache($id, $data)
 {
     object_cache_set("weibo_" . $id, $data);
     return F('weibo_detail_' . $id, $data);
 }
 /**
  * 缓存微博评论
  *
  * 缓存的key的格式为: weibo_comment_微博评论ID.
  *
  * @param array $comment_list 微博评论ID列表, 或者微博评论详情列表. 如果为微博评论ID列表时, 本方法会首先获取微博评论详情列表, 然后缓存.
  */
 public function setCommentObjectCache(array $comment_list)
 {
     if (!is_array($comment_list[0]) && !is_numeric($comment_list[0])) {
         return false;
     }
     if (is_numeric($comment_list[0])) {
         // 给定的是weibo_comment_id的列表. 查询weibo_comment详情
         $map['comment_id'] = array('in', $comment_list);
         $map['isdel'] = 0;
         $comment_list = $this->where($map)->findAll();
     }
     foreach ($comment_list as $v) {
         object_cache_set("weibo_comment_{$v['comment_id']}", $v);
     }
     return $comment_list;
 }
 public function setUserTagObjectCache(array $uids)
 {
     if (!is_numeric($uids[0])) {
         return false;
     }
     $base_cache_id = 'user_tag_';
     $uids = implode(',', $uids);
     $sql = "SELECT a.*,b.tag_name FROM {$this->tablePrefix}user_tag a LEFT JOIN {$this->tablePrefix}tag b ON b.tag_id=a.tag_id WHERE a.uid IN ( {$uids} ) ORDER BY a.user_tag_id ASC";
     $res = $this->query($sql);
     // 格式化为: array($uid => $tags_array)
     // 注: 每人最多含有10个标签
     $user_tags = array();
     foreach ($res as $v) {
         if (count($user_tags[$v['uid']]) >= 10) {
             continue;
         } else {
             $user_tags[$v['uid']][] = $v;
         }
     }
     foreach ($user_tags as $k => $v) {
         object_cache_set($base_cache_id . $k, $v);
     }
     return $res;
 }
 /**
  * 获取所有的"用户-用户组"关联关系
  * 
  * 本方法按照运行时缓存->文件缓存->数据库的顺序查询
  * @param $do_format 是否将结果集格式化为array($uid => $user_group_link)
  */
 public function getAllUserGroupLink($do_format = true)
 {
     $cache_id = '_model_user_group_link' . ($do_format ? '_1' : '_0');
     if (($res = object_cache_get($cache_id)) === false) {
         if (($res = F($cache_id)) === false) {
             $temp = M('user_group_link')->findAll();
             if ($do_format) {
                 foreach ($temp as $v) {
                     $res[$v['uid']][] = $v;
                 }
             } else {
                 $res = $temp;
             }
             unset($temp);
             F($cache_id, $res);
         }
         object_cache_set($cache_id, $res);
     }
     return $res;
 }
        } else {
            $base_cache_id = 'user_weibo_count_';
        }
        if (($res = object_cache_get($base_cache_id . $uid)) === false) {
            $this->setUserWeiboCount(array($uid), $type);
            $res = object_cache_get($base_cache_id . $uid);
        }
        return intval($res);
    }
    /**
	 * 批量预设置用户的关注数的运行时缓存
	 */
    public function setUserFollowingCount($uids)
    {
        if (!is_array($uids) || !is_numeric($uids[0])) {