# Keywords - 2020/07

## 2020/07/29

### nofollow

使用“nofollow”应对垃圾评论 如果将一个链接的“rel”属性的值设置为“nofollow”，就等于告诉 Google 不要跟踪您网站上的该链接，该链接指向的网页也不能沾您网页的声誉的光。要想让搜索引擎不跟踪一个链接，需要在该链接的定位文字中添加 rel="nofollow"，如下所示： < a href="<http://www.example.com>" rel="nofollow">此处为定位文字\</ a>

## 2020/07/24

Cache hit ratio, curl&#x20;

## 2020/07/22

News channel, Dark Mode, smart home automation system

## 2020/07/21

Apple design, 半泽直树2, Google patents

## 2020/07/16

Cloud SQL, nginx, google cdn


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