How do search engines work?
Search engines play a vital role in the Internet age, not only greatly affecting the way people access information, but also having a profound impact on many fields such as the economy, education, science and technology.
The following diagram illustrates the workflow of a search engine.
Web crawlers scan web pages on the internet. They track URL links from one page to another and store URLs in URL memory. Crawlers discover new content, including web pages, **, and files.
After a web page is crawled, the search engine parses the web page and indexes the content on the web page. Analyze and categorize content. For example, evaluate keywords, quality, content freshness, and many other factors to understand what your web pages are about.
Search engines use complex algorithms to determine the order of search results. These algorithms take into account a variety of factors, including keywords, page relevance, content quality, user engagement, page load speed, and more. Some search engines also personalize search results based on a user's past search history, location, device, and other personal factors.
When a user performs a search, the search engine filters its index to provide the most relevant results.