How to update a snapshot of a Web site and the meaning of a snapshot update

Abstract: The author in peacetime optimization process does not value the snapshot of this item, Baidu Webmaster Community has also issued a statement on the Baidu snapshot of a number of notes, detailed points out how Baidu is to update the snapshot of a website and the significance of the snapshot update,

The author in peacetime optimization process does not value the snapshot of this item, Baidu Webmaster Community has also issued a statement on the Baidu snapshot of a number of notes, detailed points out how Baidu is to update the snapshot of a website and snapshot update the significance of the author here will not go to one by one, Interested can go to Baidu Webmaster Community data area to see!

But recently I found a very strange phenomenon: the author's personal blog snapshots are updated every day, but the preview snapshot found that content is a long time ago, not real-time.

Snapshot update date and extract content

The picture above is the author blog snapshot update date, we can see is updated the next day, and extract the content is also the author of the blog yesterday just Hair article, that Baidu Spider did crawl the home page content, but point open Baidu Snapshot we will find:

Snapshot Preview Display

This blog theme is the author used last month's theme, on New Year's Day has been replaced by the current theme, the following figure:

Blog actual content

Theoretically, the author's blog snapshot updated, crawling content is even updated, but why the snapshot preview is lagging? This question is very interesting, the author has not met before, this encounter, simply to explore, the following views are the author's personal guess, not necessarily completely correct, What objections can you propose to study together.

First, the website revision, the title changes

The author's blog made a big change at the end of 2012, first of all, change the keyword, the second day of the keyword Baidu updated, and no impact, the snapshot is also very normal, and then in the first few days of New Year's Day, the author because I want to blog to achieve a lot of functions, the previous theme is too concise, can not be changed theme. The theme has been replaced, the snapshot date has been updated, but the author rarely to preview, recently found that the update is not a new theme of the preview, or the old theme, but the site's homepage content or crawled, we see the first picture will know.

Therefore, I guess it is because the frequent changes in the site caused a snapshot error, Baidu each new crawl or newly checked pages, will be based on its importance and its timeliness value at different speeds to create the index, usually said snapshot update time refers to the index time, for some often have important content updated pages, Baidu will create indexes at a faster rate. But for some frequent changes in the site, Baidu is not a way to punish it? It is obvious that the author's blog is like this!

Second, Baidu snapshot data call chaos

As we all know, snapshots of every important page tend to have multiple snapshots of pages in the search engine database, and these snapshots have different crawl times. In some very special cases, the search engine system may choose a different version of the snapshot than the current search results, resulting in a snapshot time regression. Baidu specifically stated that this site in the search engine performance without any impact, and does not mean that the search engine on the site to do the right to deal with. So like Yu Du site such a problem, although the snapshot time is updated, but the snapshot of the preview is called half a month ago, will not be Baidu data problem? For this reason, Yu Du consulted some peers, found that there are people who have the same problem, they give the answer also has Baidu data chaos.

Third, the snapshot does not explain everything

Yu Du looked at the index of his website and found an interesting phenomenon:

It basically drops one or two a day and then increases by dozens of every Friday. The snapshot of the Web page is in fact a Baidu database index, Yu Du site Index Since the revision has been falling, is the obvious punishment performance, but each update when all add a lot of index, Yu Du firmly believe that their blog article was crawled, Has not released just, now is only the observation period, snapshots appear such strange phenomenon is also very reasonable, Yu Du as long as adhere to update the blog, do the original, will soon be back to normal!

The above three reasons are Yu Du can sum up, site snapshot date update content does not update is not a big problem, if your site does appear to have changed, this is reasonable, if there is no change is also this phenomenon, then you should pay attention to update high-quality content, do the optimization work! The update of the snapshot is directly related to the presence of important additions to the page, and is not directly related to the "weight" or "K" of the site itself. So webmaster friends do not have to pay too much attention to the site's snapshot time and content, Yu Du suggested that the webmaster will focus on the content of the site construction, only to improve the content of the site and search experience, can be users and search engine trust.