SEO website stability

Zhou Wei recommends a movie to everyone: the Pacific Rim http://947kan.com/movie/kehuan/45659/

It tells the story of defending the home from the constant transmission of the space and time cracks on the bottom of the Pacific Ocean. From the story, it is very consistent with our post-80s taste, we have heard many stories about aliens when we were young. The bottom of the Pacific Ocean is still a place that humans cannot get involved in. It is the most likely place where aliens exist, when humans are still at the stage of ignorance of electricity and are doing countless experiments to learn how electricity is going, there is already a kind of fish in the deep ocean of the North Pacific that has mastered the use of electricity, it is also known as the electric power plant. In ancient times, aliens came to the earth and built a base on the bottom of the Pacific Ocean to prevent the destruction of the Earth's biological base, they also brought fish that could generate electricity and guard their bases. ========================================================== ======================================

Back to the truth, the stability of the website. During the SEO process of the website, it is often called by novice webmasters. webmasters are often confused about some application skills and are often used to add friends to links and write soft texts, posts, keywords, rankings, optimization, and other words are attractive, while the server is facing the trend of saving money. The planning of website functions and structures is a step-by-step mentality.

Taking a website that has been built for half a year as an example, my friend said that at the beginning, the traffic was still good. I don't know why, the indexing suddenly disappeared and became fewer and fewer, even the Home Page snapshot is gone. At that time, I was first reported to be affected by K, and then I carefully asked him about the large operations he had done during that time. My friend said that he had not done anything, but changed the server, some problems have occurred during data migration, and the website has been suspended for nearly a week. However, this is a week that is not a major event, so that the search engine archives the index volume of his website. One week later, the website will be restarted, at this time, the search engine has treated it as a new site, and the search engine has a short period of observation on the index of the new site.

Therefore, website migration:

1) back up the current website and back up the configuration files on the server (sometimes the server configuration files are set separately for convenience of debugging and security issues ).

2) back up the database and download it to the local database for backup. You must perform a restoration test on the local machine to ensure that the data files are truly available.

3) Upload the website and database files to the new server and confirm the configuration.

4) use the second-level domain name provided by the supplier or your own domain name, and confirm that the domain name can be accessed normally after resolution.

5) Resolve the original domain name.

 

Two months have passed. One day, my friend found out and said, "I cried that since the last server migration, it has been around a month, and the search engine has started to include many items, I don't know why, but now there are fewer and fewer original articles. after I have ruled out some problems that may affect the indexing, I suggest using his log file.

From the log, we can see that the search engine spider does not always exist. Instead, they did not search your website from start to end, and then left, instead, it crawls continuously based on a certain screening and queue.

 

According to statistics, spider crawls are not smooth, So they hit the wall everywhere, especially the 500 app server error in the backend. It shows that he did not find what he wanted. Check again

The error "800a0009" occurred when accessing RUL. The subscript was out of the range [number: _ 8]. The Spider tried to access RUL twice, however, there is nothing that a large number of links cannot be accessed. After inquiry, it is learned that after the search engine resumes collection, he made a small function adjustment and added a parameter transfer, because his website uses pseudo-static files with parameters in the file name, this seemingly simple adjustment took only a few minutes, but it caused all the addresses originally indexed by the search engine to fail, because the format of the parameters in the file name has changed, the processing parameters are processed by the new program. When the original address format is converted into an array, it is out of bounds due to the lack of parameters.

Therefore: plan the program architecture at the beginning of the program as much as possible and reserve interfaces for program extension. When modifying the link, especially the pseudo-static state, the parameter is a part of the file name, make sure that the pre-processing is done to maintain compatibility with the original link.