In order to be better able to be present in the job market and overcome your other competitors and make good progress, you should be familiar with some terms that exist in the field of web and site design so that you can easily set goals and find good and suitable ways to Use success, increase traffic and visit your website . One of the most widely used terms in the field of web and SEO is the concept of spiders and reptiles. This article contains valuable concepts and explanations about these terms that can be very useful for beginners in this field. It is recommended that site owners and newcomers do not miss this article and its description.

The concept of spiders in SEO

Having software called spiders in search engines can be a very interesting topic for users. Many users may be wondering what the spider has to do with search engines and SEO. To answer this question, we need to analyze the performance of the spider in the main world to discover its similarity in the real world and the virtual world of the Internet. Spider-Man jumps from building to building and from wall to wall, dismantling tall buildings. In the virtual world of the Internet and search engines, when optimizing sites , crawlers and spiders inside search engines go to the site and other pages through in-site links. In other words, the links on sites and pages act like spider webs, and spiders go from page to page and from site to site through the same links. Spider is software that has been placed inside search engines and optimized to go to various pages and sites through links and optimize their content.

Crawlers are software that follow the links on pages as an algorithm to reach different and related pages and index their contents for search engine databases so that the search engine database is always up to date and can After the user search, display the result easily and quickly for the user.

Spiders are software that scrolls from page to page, scanning and indexing their contents. The links that spiders use to go to other pages are called feeds. Spiders use the links on the pages as a webbing thread. Here we can understand the importance of internal and external linking , and site owners need to be careful about linking in order for their site pages to be better indexed and placed in search engine databases.

How spiders and crawlers work

Spiders use it to index the pages of your website through links on various pages. Spiders work according to certain policies. Their work policies are as follows:

- Selection Policy:

One of the policies that spiders use to select pages from the website to be indexed. This means that they use this policy to determine which pages of the website should be indexed.

- Re - Visit Policy:

A policy used to review and revisit web pages. As web pages are first viewed and optimized by search engines and then placed in a list, it is up to the spiders to revisit and rediscover which of the web pages in the list should be revisited. Be re-examined and this diagnosis is made using this policy. In other words, this policy is used when crawlers have indexed page content and placed it in database directories, but for better and easier access they should check the links in the database, which The review is done through this policy. 

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