Example analysis of why snapshots with 3W and no 3W are inconsistent

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Site snapshots is the webmaster to determine whether a site is normal basic factors, although the search cited the snapshot is just a cache, but in the webmaster's eyes, snapshots are able to analyze the spider has not crawled the simplest basis of the site. Believe that a lot of exchange links have encountered each other to emphasize the snapshot time bar. This is enough to prove that the webmaster to the snapshot of the new and old views. And the author friend of a website recently appeared strange situation, with the WWW snapshot does not update, and not the WWW snapshot is the next day new. So what is the reason for this? Today, I share my experience on this situation.

Snapshots with www stay on December 27

Snapshots without www the next day new

This situation, the author's analysis, there are two major reasons:

One, 301 redirect not good

In the Website optimization experience article share, many stationmaster all said, completes 301 redirects to be possible to solve the website weight loss and more favors the weight to concentrate on a certain page. I do not comment on this point, but for 301 redirect is only concentrated weight it? In fact, according to the author analysis, there is no 301 redirect, can be related to the two snapshots are a certain factor. And the author from the establishment of the station has not been redirected to the www without www, this will make the search lead to the original is a site to judge two independent sites, naturally there will be two snapshots of the site is inconsistent. After all, no 301 redirects will allow itself to be a Web site into two sites, and we all know, if it is two sites, without the weight of the WWW will obviously be higher than the weight with www, formal, not with the WWW is the search cited the top-rated domain name, and take the WWW as a two-level domain name. So, do 301 redirect not only can focus on a page, but also make spiders don't mistakenly think that with www and without the WWW is two sites, so that will not produce two different snapshots.

Two, with www and without the chain of www outside the big gap

Outside the chain can make the site snapshot to be updated this is the default fact of the webmaster, then in the site optimization process, itself a Web site with www and no www outside the chain number gap too will cause two snapshots inconsistent, such as the author's website outside the chain map:

Baidu with no www outside the chain shows more than 7,000

With WWW only displays as 2000

Through the above figure, you can see the author's site outside the chain is absolutely big bar. Outside the chain is also affecting the snapshot of one of the reasons, so I infer that the site snapshots inconsistent reasons for most of the above, this author has 80% certainty is this reason. So as long as the author in the future hair outside the chain more focused on the Web site with www can slowly revert to normal, so, the snapshot is inconsistent, in fact, the chain is also very important, a good analysis of the reasons for the chain, so as to more quickly find the occurrence of the keyword factors.

So, when the site appears with a different snapshot with www and no www, we need to figure out where the reason is, so it will be more effective for us to solve. This article originated from the creative home www.520jia.com webmaster Contributions, the text of the points are original, reproduced please specify, thank you for your cooperation!