百度快照:指的是网站上被收录的页面,都在百度上的纯文本里备份。网页的抓取频率和快照的更新频率是两个不同的概念。

被百度收录的网站,蜘蛛会根据该站点内容更新的频率,频繁的来站点检查是否有新的网页生成,蜘蛛的抓取频率会和网站产生新内容的速度相符,这个就叫蜘蛛对网页内容的抓取。

百度快照自动更新原理:

1、网站上被新抓取的页面或者是新检查过的网页,蜘蛛都会根据页面的价值性以及时效性的不同创建索引,快照更新时间就是指索引时间。

2、在一个页面上只是做了文字变更,内容并没有价值性,搜索引擎并不一定会认为该页面有快速更新索引的价值,百度蜘蛛如果重新抓取了该网页内容,也不一定会有快照更新。

快照时间为什么会倒退?

1、如果一个页面的价值性越高,搜索引擎会在数据库中保存多份网页快照,快照的时间也是不相同的。

2、特殊情况下,搜索引擎系统会发生不同于当前搜索结果中的快照版本,产生快照时间倒退的情况。这种现象搜索引擎并不会对网站做降权处理,也不会影响搜索引擎对网站的表现。

百度快照是百度系统自动去抓取生成的,所以说百度快照是不需要站长去做的。快照对排名没有任何影响,只是以不同的方式展现。站长可以多把心思放在SEO优化上。

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