How to avoid the impact of a Web site replacement server

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Hello everyone, today to talk about how to avoid the impact of Web site replacement server. Server or space transfer sooner or later we are all to meet, including all the webmaster, today you did not encounter, you will meet one day, such as sometimes the space expires, want to change a larger space, or the existing traffic and space is not satisfied to change the server, Sometimes Netcom server access is slow to change the dual-line server, a variety of problems are to replace the server. Many of our friends find that often change the space or the server, will find some cases: 1, the site snapshot does not move, and even the site snapshots of the phenomenon of regression, especially the weight of the new station (not more than 6 months), in fact, each new station has an observation period, 2, found that the site is not included in the previous speed of 3, keyword ranking has a drop will be very large. What is the cause of all this? 11545.html "> We have a good way to solve it, or to the impact of the minimum, nonsense is not much to say, we look at:

First, let's take a look at the causes of these phenomena.

1. Problems caused by DNS resolution. We are transferring the server, need to operate, need to be resolved to the new server IP above, that is, we transfer space or server, domain name to be revisited, then there will be such a situation, DNS global effective time is generally 24 hours, then in this time, Each place ping domain name IP address will not be the same, and sometimes after the domain name resolution, their visit, 5 minutes on the entry into force, but other provinces friends to help me ping, or the previous IP. If in this time, your old station can not visit, or your site data has been deleted, your site will be affected, because the search engine crawling again will appear dead links, I believe that often do domain name space friends should be very familiar with.

2, the spider to the domain name pointed to the IP address will be cached. That means the spider, for quick access, save the response time of the server, it will be a cache of each domain data, cache data for how long who can not tell, because once we have IP replacement, search engine spiders also use the cache IP address to visit, found that our website can not visit, At this time will appear dead link, we all know dead link and website cannot visit, will cause the website keyword rank and the website weight as well as the website credit degree drops!

So how do we solve the problem?

When the server is transferred, try to take less spider visit time period.

How do I know which time is the least for spiders? Very simple, we just want our IIS log set to one hours a day, 24 copies a log. Then use the IIS Bulk Check tool to detect, then we can see which time period spider's crawl quantity is smallest, we will solve that one hours.

Ensure that the original server and space continue to access when replacing the server

When replacing the server, ensure that the original server and space can continue to access. That is, our data to be synchronized update, of course, the timing of the synchronization update does not take long, so that the original program can still access, that is, we have to resolve the IP address to a new IP address above, it has a period of time, it is related to the region, So we have to ensure that the original IP address at least 24 hours until the new IP address can be fully effective globally. Of course, if you do not do foreign trade website, you just see China on the line! In fact, as long as you seriously to observe IIS log, you can find Baidu has unicom spiders and Baidu spiders, because Baidu also has a lot of servers, distributed throughout the country, and each server has the function of crawling site.

You need to update two programs synchronously

Your original space can be accessed by IP address, then you need to synchronize updates.

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