SEO need to know the reason why--the search engine

As we all know, a seoer need to have a certain understanding of the structure and working principle of the search engine. At present, the Chinese information about search engine structure and working principle is not very rich. Even though there are some literatures, most of them are more bitter and dull to read. However, a good seoer is needed to understand and understand, according to personal reading research experience, the search engine architecture is popular to share the following:

1, the concept of the searcher

The search engine is a more important part of the architecture of search engines, and its function is to crawl Web pages and gather information in the vast ocean of the Internet. Then pave the mat for the rest of the work. Search engines are generally called web crawler, the current netizen commonly known as "web Spider" or "Spider" (Spider's English is: Spider). Through its literal meaning we can not understand its function, it in the "crawling" to the rapid and extensive collection of various new information;

2. The Finder reflects

When we browse the Web, we find that the content of a website is often updated, and the frequency is generally higher, because some information has real-time, more than a period of time will become obsolete useless garbage information, so the spider needs in the prescribed cycle to crawl the contents of the page, but also to identify those pages are updated, The content of those pages has been obsolete, not updated, the links inside those pages are dead links, which pages are no longer need to "crawl" and so on.

3. How the Search engine works

So how does the search engine collect information about the site? Generally use the following method: "Spider" starting from a URL, follow the URL hyperlink, use various ways in the Internet site to find information, and then repeatedly, at the same time the search engine will also be collected all the pages stored up.

4. Search Engine Important technology

Through the above introduction I believe that you have a certain understanding of search engines. Then the analysis of a search engine is a more important technology, that is, Web content extraction technology.

Web content Extraction Technology first to understand is the search engine indexing, the current search engine processing object is only text files. But generally a Web site has a number of pages, and each page will have different formats of documents, such as pictures, Flash,pdf,word, multimedia and other rich and colorful format. It says the search engine handles text files, and the indexer extracts the text files from the Web page.

Finally hope that you can put some SEO technology and theory, so that not only can quickly understand the master of SEO technology, and can be a divergent thinking to face a variety of SEO, do extrapolate, truly become a SEO leader.

Behind closed doors of the internet era has passed, the era of open communication unstoppable, I am willing to roll forward the wheels to provide their humble power. I also hope to be able to communicate with you, common progress!