What is the procedure for the search engine to spider the user’s website? - SEO

What is the procedure for the search engine to spider the user’s website?

- Search engine uses spiders to gather the information from the websites and on revisiting it shows the submitted URL for the website.

- The spider that is used with the search engine finds the information and revisits the site when the URL of the site is submitted again.

- After the spider finds the link of the user’s site it specifies the amount of time is being spent from the last visit.

- After looking at the number of websites the spider visits and the resources being utilized by the spider the visits can be calculated.

- It uses the visits and revisits of the user for the user’s site to calculate the exact result for the search engine.