Robots 5 benefits and Robots risks and solutions
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1. generally speaking, google and baidu's search engine spiders follow robots.txt the rules given to crawl on your website, robots the agreement stipulates that the entrance of search engines to enter your website is the website. robots.txt file, but there is a prerequisite robots.txt the file must exist. if your website is not defined robots.txt file, then what will happen?
apparently the spider will be redirected to the 404 error page, many seoer experience, assuming your website has a custom 404 page, then spiders will regard it as robots.txt， so from this we can see that there is no robots.txt the file's website will cause great trouble to the spider index website, which will affect the search engines' collection of content on your website pages.
2. robots.txt the second advantage is that it can limit unnecessary search cues to your website to crawl to alleviate the server's valuable bandwidth resources, such as mail servers, Erp servers, such services have no meaning to search engines; for example, taobao websites use them robots the spider crawl is limited.
3. if some files on my website are non-public, then i can use robots.txt make an explanation, do not allow search cues to crawl, such as our website’s background management program. in fact, some websites that generate temporary pages during operation are assumed to be not in robots.txt to explain, search engines will index those temporary files.
4. if your website has many pages, then configure it robots.txt it is necessary, because many times spider-like visits will put huge pressure on the website, assuming you don't use it robots to control it, it may cause your website to be denied access.
5.a website is generally related, so it will inevitably produce many contents with similar pages. for search guides, the page similarity is too high, and it may punish you. robots.txt restricting certain pages without re-included can help you solve this problem well.
robots.txt risks and solutions:
1. everything has a good side and a bad side. robots.txt while bringing the above benefits to the website, there will also be certain risks: the first is to indicate the directory structure of your website and the location of your private data to those who are embarrassed. although our server security has been greatly improved, we must prevent anything before it happens.
for example, the private data in my website passes through this address www.suyouweb.com/private/index.html# visit, in robots.txt i set the settings in this way:
User-agent: *
Disallow: /private/
robots.txt the file clearly points out where you want to hide it, enter it in the browser www.suyouweb.com/private/# access our private content.
so how do we solve this problem?
a. right /private/directory settings access permissions, such as password protection.
b. rename the default main page in the directory to such as: 123- protect.html， go in the same way, design a new one index.html the content of the file can be written "sorry, you do not have permission to access this page".
2. carelessly robots file settings errors may cause the data you have already been included to be deleted by searching. like:
User-agent: *
Disallow: /
the above two lines of code mean that no search engine search spiders are allowed to come.website included，for more website building information, please pay attention to suyou network.
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