对于大型网站来讲,流量都是以万起头的,但是任何网站都不免因为业务的需要,或者说系统的升级,而不得不对网站进行改版。如何正确的改版不让不让网站出现损失,或者说将损失降到最低呢?尤其是对于大型网站来讲,是一个慎重且严谨的问题。今天这篇文章,贺贵江这里就做几个典型的改版指导。
一:更换模板的改版
网站改版中,更换模板是属于最为常见的一种改版,这种改版按照正常的情况是不会有任何风险的,但是却仍旧有一些网站出现了问题,那么是什么情况呢?
第一种情况:网站模板本身存在较多优化问题,而导致网站整体并不利于优化,要知道搜索引擎看的就是网站前端,如果前段优化不如之前,排名自然的被向后推移。
第二种情况:内链布局出现问题,简单的说:某个页面产生排名是因为全站点为其赋予了足够的内链权重,但是在新的模板中,这个权重消失了,那么还会产生排名吗?
更换模板的改版是最为简单的,但对于大型网站来讲模板越复杂,面对的风险也就越大,SEO处理不完善的模板,请不要将其放到程序上,一旦放上去,就不要做修改了!另外,更换完模板后,还要进行404的监测,可以通过百度站长工具,或者LOG日志来查看。
二:更换程序的改版
有一些网站建设的时间非常早,前段时间就有一家网站来做 SEO诊断,网站做了有十多年,但是还是最为基础的ASP,甚至都是动态链接,系统功能也非常弱,基本的不同栏目标题设置都不支持。所以,需要在SEO诊断的同时,也需要做一次更换程序的改版(他的网站收录30多万)。
对于他这个改版,是ASP程序,更换为PHP程序,如何操作呢?我们建议的是在当前站点上直接套一个PHP程序,然后将全部栏目页均301重定向到新的栏目页上。同时,之前的内容禁止删除,之前的内容页基本禁止再放到新的程序上。这个站长曾经将全站的数据,继续采集到PHP站点上面,是完全错误的,哪怕可以做301,仍旧不合适!你知道吗?
上面是一种形式的改版,是同一类型的语言,且会造成大量的目录和结构的冲突根本无法避免,这样的如何操作呢?可以将老站点做到新的子域名中,之后301即可!这种的损失相对来讲,也是最大的,重要的还要站长平台中做好网站改版规则的提交哦!
三:系统升级的改版
除了更换模板,系统升级的改版是站长操作最多的了,比如:增加一个模块、做一个新的功能,都属于系统方面的升级。然而,就是这样的升级,都会让一些网站产生问题。
在2015年底的时候,笔者诊断过一个网站,之后这个站点进行了一次系统的升级,结果导致收录在一个星期就暴增了两百万!什么原因造成的?新的升级程序升级将优化后的robots.txt给覆盖了!这是一个非常严峻的问题,200W垃圾页面的收录,对网站的影响是极大的!
对此我们要说的是:网站无论如何做升级,都要记住一点:如果有覆盖性的升级,一定要检查好哪些东西是可以覆盖的,哪些是不可以覆盖的。
还有一些系统的升级是如模块的增加,功能的开发会产生一些新的页面出来,这样的升级更应当提前评估:新的页面是否符合搜索引擎规则,新的页面是否已经有足够的信息来完善这个页面,满足用户的需求,并不仅仅是一个框架。
除此外,系统升级的改版更要密切关注搜索引擎的抓取频次、以及测试抓取是否可以快速联通,是否会因为页面太大而造成抓取缓慢等一系列的问题。
最后有一个非常重要的说明:网站流量越大,收录数据量越多,改版更应当重视有一个原则:只要没问题能不改则不改,只做必要的问题修改,其他的修改则留到网站发展瓶颈的时候再做完善!为什么有的网站做的越完善,排名反而越糟糕呢?是因为修改的太频繁啊,但是自身却没有认识到这个问题!
A5营销( http://www.admin5.cn/seo/zhenduan/)手把手教你做网站优化,系统的解决方案,让网站优化一步到位,点击一下,即刻拥有!

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