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Web crawlers-how do they know what you are looking for?

The Internet has indeed brought revolutionary changes to the communications industry. It is incredible how much you can get with one touch of the keyboard. It is interesting to use a search engine and see the list of available websites, which originated in the United States and all over the world.

Have you ever wondered how search engines rank a website? They use something called web crawlers. This is a very descriptive term, but it is only partially accurate. Although “web crawler” means a small animal scurrying around your computer, it is actually just an electronic signal that requires a web server to provide a specific page. Then, the web crawler program passes the web page data to the indexer of the search engine.

In other words, a web crawler is a program that systematically browses the Internet, looking for specific content. They create a copy of the visited page. Later, these pages were used by search engines, and search engines indexed these pages into a huge database in order to find information quickly. Then, the query processor uses the database to compare the search terms with the information in the database, and returns a list of websites that theoretically list the most likely matches to the search terms.

Web crawlers are sometimes used to perform automated tasks, such as collecting email addresses or other information; checking links or verifying URL codes.

Web crawlers usually start from the URL in the access list. It identifies all the links in the URL and adds them to its list. It is easy to see that a web crawler has a large list of URLs, and it is impossible for a web crawler to visit all existing URLs. Therefore, every search engine has developed a method for its web crawlers to efficiently access these URLs, thereby accessing as many URLs as possible. Factors to consider include how many links a URL contains and how popular the site is among web users. There is also a process to determine how often a web crawler visits a web site to monitor changes to the site.

Of course, every search engine has millions of web crawlers working at any time. With all these web crawlers exploring and revisiting websites, it is necessary for search engines to develop methods to avoid overloading specific websites. This is known as the “polite policy” and aims to keep the website up and running despite the large amount of traffic. Some web crawlers are also programmed to collect multiple types of data at once.

If you don’t want a website to be crawled (for example, if it has personal or private information), you can design a “firewall” so that web crawlers will not pass it.

Although the actual work of web crawlers is usually high-tech and confusing for ordinary web users, it is interesting to know what names various search engines give their web crawlers. For example, Yahoo calls its web crawler “Slurp”, Altavista calls its crawler a “scooter”, and Google calls it “Googlebot”.

If you have a website, it is worth researching every search engine to determine how to improve your website ranking. By reading and following the tips and guidelines for each website, you can increase the chances of web crawlers visiting your website and improve how your website meets the scoring parameters of each search engine.

Although search engines will not disclose every parameter it uses (Google says it uses more than 200 parameters), every engine has pages, blogs, and other materials to help you improve your rankings. After all, search engines are also businesses. They are also helping you improve their website.

There are also professional consultants and companies who also help improve your website ranking. Although they will consider various factors, they will also help compare your website with the operating parameters of each web crawler. Sometimes, fixing a simple but technical problem can help improve the response of web crawlers on the site. Isn’t it incredible that electronic signals can compile the information you need in a few seconds? Slurp, Scooter, and Googlebot are all electronic friends and can help each of us with our work every day. You don’t even need to feed them.

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