Interpretation.com Technology | dig deep into the search engine spider technology to promote website SEO optimization ranking effect

First, how spiders work

Web spiders are also the spiders of search engines, which are used to find web pages by linking addresses. The name of the search engine spider varies depending on the search engine. The principle is to grab the content of a web page from an initial link, while collecting links on the web page and using those links as the link address for the next step. This loop does not stop until a stop condition is reached. The setting of the stop condition is usually based on time or number, while the crawl of a spider can be limited by the number of link layers. At the same time, the importance of page information is also an objective factor, which determines the spider's retrieval of the website page. The search engine spider simulator in Webmaster Tools is actually this principle, accurate I don't know. Based on how spiders work, webmasters unnaturally increase the number of keywords on a page. Although the density has changed, the spider has not reached a certain qualitative change. This should be avoided during the SEO process.

Second, the interaction between search engine spiders and websites

Page metadomains are also an SEO technique often used by webmasters. This field is usually placed at the beginning of the document. Many websites simply write a field that allows Baidu to crawl. This is incorrect. I do not know. In fact, many SEO phenomena are based on data analysis and comparison.

Third, search engine spiders for file processing

(1) Binary file processing

In addition to HTML and XML files, there are a large number of binary files in the network. Search engines handle binaries separately, and their understanding of the content relies entirely on the anchor descriptions of binaries. Anchor descriptions usually represent the title or basic content of a file, often referred to as anchor text. That's why we need to analyze and select the anchor text of the website.

(2) Script file processing

Client-side scripting is in a web page, and when a web page is loaded to read the script, search engines tend to ignore its processing directly. However, due to the increased requirements of web designers for non-refreshed pages and the widespread application of Ajax technology, another web search program is often used for its analysis and processing. Due to the complexity and diversity of scripts, webmasters often store these scripts in a document based on their own website and use call technology to speed up page loading, while at the same time, they also take advantage of call files that spiders can't analyze and process. This also belongs to SEO technology, and it would be a huge loss to ignore its handling.

(3) Processing of different file types

The extraction and analysis of web content has always been an important technical part of webspider, and it is also a search engine technology that SEO needs to understand, depending on the diversity of website information updates. That's why professional websites attach various file types like Excel, PDF, etc. This also belongs to the SEO process. Web spiders usually use plugins to handle different types of files on the internet. If you have the ability, the update of the information content of the website tries to take diversification as much as possible, helping the website to achieve an SEO system that diversifyes the search information.

Fourth, search engine spider strategy analysis

(1) Search policy

In general, there are two types of search strategies: depth-first search strategies and breadth-first search strategies.

Breadth-first search strategies are often thought of as blind searches. It is a greedy search strategy that prioritizes searching for more web pages. As soon as something is retrieved, it grabs it. It will first read one document, save all the links on the document, then read all the linked documents, and then proceed in turn.

The depth-first search strategy webspider program analyzes a document, takes out the document indicated by one of its links, continues the analysis, and then continues to do so. This search strategy enables the analysis of the structure of the website and the in-depth analysis of the links to the pages to convey the information of the website.

There are also algorithms on the Internet based on the core technology of search engines, such as hashing algorithms and genetic algorithms.

(2) Update the policy

Depending on the cycle of web page changes, only those pages that change frequently are updated, which is also a common method used by some small search engines. That's why webmasters update their site's content every few weeks, which is based on SEO technology. Web crawlers typically use individual update strategies. It is based on the frequency of changes in a single page to determine the update frequency of the page, so that basically each page will have an independent update frequency.

SEOER improves SEO techniques based on an understanding of the principles of search engines, which is also an SEO technique. In the seo process, you can naturally do what you're doing and why you're doing it, rather than just sending out a link to a mechanical operation.