How the Yandex search engine works

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The work of such large and well-known search engines as Google and Yandex is based on a system of clusters. They group all information into specific areas tied to a particular cluster. Special crawler robots are used to index sites and individual pages and collect data from them.

They come in two types: the main crawler robot (designed to collect data from regularly updated Internet resources) and the crawler robot (needed to update the list of indexed sites and their indexes in the shortest possible time). In order for the Yandex search engine to collect information on the Internet as fully as cell phone database possible, the search base and program code are regularly updated:

The search information database is updated several times a month, with users receiving updated data from Internet resources when entering queries in the search bar. This data is added by the main crawler robot.

Updating the program code or, as programmers call it, the "engine" is designed to find and eliminate shortcomings in the algorithms that rank pages in search results. Yandex usually warns users about upcoming changes.

The main advantage of the Yandex search engine, which explains its popularity in RuNet, is the ability to find different word forms taking into account the morphological features of the Russian language. Geotargeting and the search formula allow you to get the most accurate wording at the output. Yandex also has its own unique algorithm for ranking pages and sites. An indisputable advantage of the system is the speed of processing user search queries and the stable operation of the servers.

As already mentioned, when indexing resources, the search engine looks at dynamic links, the presence of which may cause the bot to refuse to determine the site index.

The principle of Yandex’s operation is based on the analysis of text content in documents with various extensions (.pdf, .rtf, .doc, .xls, .ppt, etc.).

During the process of indexing an Internet resource, the search engine takes data from the robots.txt file, while the Allow attribute and some meta tags are supported, and the Revisit-After and Keywords meta tags are not taken into account.

Snippets (short descriptions of text documents) consist of phrases on the searched page, so it is not at all necessary to write tags in the description, but they can be put if there is such a need.

According to many developers, the code of indexed documents is determined automatically, so the encoding meta tag does not play a big role.

Yandex pays great attention to the indicator of the last change of information (Last-Modified). If the server stops transmitting this data to the search engine, then the site will be indexed much less frequently.

If an Internet resource has its own “mirrors” (for example,http://www.site.ru,http://site.ru, <a target="blank" href=" https://www.site.ru" ; rel="nofollow"> https://www.site.ru), you need to make sure that the search engine does not index them. If this is not possible, then it is possible to glue such sites by making appropriate changes to the robots.txt document.

Once an Internet resource gets into Yandex.Catalog, the search engine will classify it as a site requiring special attention, which will affect its promotion. This will also simplify the procedure for determining the subject of the site, which is undoubtedly a plus, since it will have a significant external link.

Yandex developers do not disclose the IP addresses of their robots. However, in log files on various sites you can find text marks belonging to the robots of this search engine.