今天晚上有网友找到国外主机优惠，说自己新搭建的博客还没有多少流量，网站就打开非常慢，需要刷新很久才可以慢慢打开，而且自己使用的是阿里云VPS主机，速度不至于这么慢，于是国外主机优惠帮助看看到底是什么问题。我们先通过TOP命令看看当前VPS的负载情况，果然占用很高的CPU资源，php-fpm基本上占用CPU在60%+，再去看看日志。
我们看到了什么？有很多的YisouSpider爬虫，这个蜘蛛其实也没有多少用途，是来自阿里旗下的一搜视频和神马搜索蜘蛛，占据很小的搜索流量，我们可以屏蔽掉爬虫。这里我们可以参考前天发布的\”通过设定.htaccess和nginx.conf禁止恶意User Agent网页爬虫\”来解决问题。这里国外主机优惠单独针对YisouSpider爬虫来解决掉我们的困扰。
第一、Nginx环境网站
如果我们采用的是Nginx环境的网站，就相对简单很多，直接在当前站点的.conf文件中添加脚本。
if ($http_user_agent ~* \”YisouSpider\”) {
return 403;
}
替换之后重启Nginx，我们就可以解决这个问题，只要过来，就返回403.
第二、Apache环境网站
这个也很简单，我们可以直接在.htaccess根目录文件中屏蔽掉来访的YisouSpider蜘蛛爬虫的IP地址。
Order allow,deny
Allow from all
Deny from 42.156.139.54
红色的IP地址就是我们需要屏蔽的YisouSpider爬虫IP地址，这里国外主机优惠整理到当前大部分的YisouSpider蜘蛛地址，我们都添加进去。
Deny from 42.156.136.95
Deny from 42.156.137.67
Deny from 42.156.137.62
Deny from 42.156.137.63
Deny from 42.156.137.60
Deny from 42.156.138.113
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Deny from 42.156.138.51
这样我们基本上可以解决问题，如果还有漏网之鱼的IP地址，我们再从日志文件中找出来添加进去。如果我们网站采用到CDN加速，这里需要注意到返回的IP地址不是蜘蛛地址，而是CDN的返回地址，我们需要用到非加速状态的获取真实IP地址。
总结，这里国外主机优惠上面分享到Nginx和Apache环境下的，屏蔽YisouSpider爬虫的抓取导致网站访问变慢和卡死的问题。