emlog缓存文件优化 加快文章发布速度/缓存速度

今天分享一下Emlog网站优化,如何加快网站的缓存速度,加快文章发布速度的方法

Emlog是基于PHP+MYSQL的运行环境,那么缓存来源于MYSQL数据库,加快缓存速度,就是要加快MYSQL的查询速度 针对MYSQL的查询优化,有建索引等等,还有重要一点“SELECT * ”类似这样的SQL查询语句要少用 当表内某字段存在“NULL”值时,查询就会很慢,当数据量大了之后会更慢! 所以有两个优化方向,尽量减少数据库中的NULL值(空字符串) 其二就是优化SQL查询语句,建立索引 那么针对EMLOG缓存,我们就可以针对性优化 本站的优化就需要在用户表数据这里处理,因为用户过多导致用户缓存数据特别慢。

1、用户缓存修改方法:

打开根目录下的“include\lib\cache.php”将用户数据缓存这里替换一下,代码如下:

未修改前:

代码语言:javascript
复制
/**
 * 用户信息缓存
 */
private function mc_user() {
$user_cache = array();
$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "user");
while ($row = $this->db->fetch_array($query)) {
    $photo = array();
    $avatar = '';
    if(!empty($row['photo'])){
        $photosrc = str_replace("../", '', $row['photo']);
        $imgsize = chImageSize($row['photo'], Option::ICON_MAX_W, Option::ICON_MAX_H);
        $photo['src'] = htmlspecialchars($photosrc);
        $photo['width'] = $imgsize['w'];
        $photo['height'] = $imgsize['h'];
    $avatar = strstr($photosrc, 'thum') ? str_replace('thum', 'thum52', $photosrc) : preg_replace("/^(.*)\/(.*)$/", "\$1/thum52-\$2", $photosrc);
    $avatar = file_exists('../' . $avatar) ? $avatar : $photosrc;
}
$row['nickname'] = empty($row['nickname']) ? $row['username'] : $row['nickname'];
$user_cache[$row['uid']] = array(
    'photo' => $photo,
    'avatar' => $avatar,
    'name_orig' => $row['nickname'],
    'name' => htmlspecialchars($row['nickname']),
    'mail' => htmlspecialchars($row['email']),
    'des' => htmlClean($row['description']),
    'ischeck' => htmlspecialchars($row['ischeck']),
    'role' => $row['role'],
    );

}
cacheData = serialize(user_cache);
this->cacheWrite(cacheData, 'user');
}

替换为下面代码:

代码语言:javascript
复制
/**

  • 用户信息缓存
    /
    private function mc_user() {
    $user_cache = array();
    query = this->db->query("SELECT uid,username,nickname,role,ischeck,photo,email,description FROM " . DB_PREFIX . "user");
    while (row = this->db->fetch_array($query)) {
    // $photo = array();
    /

    $avatar = '';
    if(!empty($row['photo'])){
    photosrc = str_replace("../", '', row['photo']);
    imgsize = chImageSize(row['photo'], Option::ICON_MAX_W, Option::ICON_MAX_H);
    photo['src'] = htmlspecialchars(photosrc);
    photo['width'] = imgsize['w'];
    photo['height'] = imgsize['h'];

         $avatar = strstr($photosrc, 'thum') ? str_replace('thum', 'thum52', $photosrc) : preg_replace("/^(.*)\/(.*)$/", "\$1/thum52-\$2", $photosrc);
         $avatar = file_exists('../' . $avatar) ? $avatar : $photosrc;
     }*/
     $row['nickname'] = empty($row['nickname']) ? $row['username'] : $row['nickname'];
     $user_cache[$row['uid']] = array(
         'photo' => $row['photo'],
         'avatar' => $row['photo'],
         'name_orig' => $row['nickname'],
         'name' => htmlspecialchars($row['nickname']),
         'mail' => htmlspecialchars($row['email']),
         'des' => htmlClean($row['description']),
         'ischeck' => htmlspecialchars($row['ischeck']),
         'role' => $row['role'],
         );
    

    }
    cacheData = serialize(user_cache);
    this->cacheWrite(cacheData, 'user');
    }

2、emlog核心优化方法:

打开“admin\save_log.php”文件搜索:

代码语言:javascript
复制
// 源代码
$CACHE->updateCache();

// 修改为:
$CACHE->updateCache(array('sta', 'tags', 'newlog', 'logsort', 'logtags'));