Experience talking about the power-descending disturbance caused by too many 302 redirects

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I think most of the seoer are familiar with the HTTP status code for 301 redirects, the main purpose is to change the domain name or not with WWW domain name to the domain name with www. And for 302 redirects, we probably don't know much about it. 302 is the meaning of temporary redirection, which represents a page that is only temporarily moved to another page. In actual combat use, we can be divided into two categories, one is: the same domain name in two different pages between the temporary redirect, this becomes a temporary redirect for the interior. The other is a temporary redirection between different domain names, called external temporary redirects. However, basically all search engines only define it as an internal 302 redirect. For this, if the internal 302 redirect Search engine does not delete the old pages in the search results. For the external 302 temporary redirect is more complex, the general webmaster is not used, some people may be used in black hat technology, using 302 of external redirection to carry out "302 hijacking", the content of others hijacked to their own pages, to get better weight.

For both of these 302 redirects, we typically use an internal temporary redirect. The author of the site due to the site program caused by the same content repeatedly called the problem, resulting in a large number of Web site duplication of content, so the author uses 302 temporary redirect to deal with these duplicate content. And the result is the search engine spiders crawling these content, the return of a large number of 302 status code. As shown in the following figure

So many 302 status codes led directly to the tragedy of the following day. In the next day I found that the site's keyword number from the original 180 plummeted by half, only 93 left. Knowing the severity of the problem, I immediately contacted the use of 302 redirects. By the third day, the number of keywords in the site from 93 to the original level.

To this author came to a conclusion: The station too much 302 temporary redirect will likely lead to the search engine penalty, resulting in the site is down right. And fortunately, the search engine will not immediately to your site big down the right, as long as the timely correction can be restored soon. and to the station in the redirection, I suggest or directly use 301 Permanent redirect. This article by the navigation Station http://www.0com0.com/original, reprint please keep the source of the article, thank you!