One SEO professional was curious about Google’s types of crawls.
They explained that when they posted one article per day on their blog , Google crawled their website every day.
When they went through Google Search Console, they examined the sitemap, and they saw that Google recrawled it every day.
However, after becoming more inconsistent with publishing habits, they found Google crawled the site less.
John explained that this is possible. He then said that Google doesn’t crawl websites, but they crawl pages of a website.
And where crawling is concerned, they have two types of crawling.
One type is a discovery crawl, where they try and find brand-new pages on your site.
The other is a refreshed crawl where they update existing pages that they are aware of.
They can, for example, crawl the home page with a refresh crawl once a day or every few hours or something to that effect.
If they find new links, then they will go off and crawl those with a discovery crawl as well.
Because of this, you will always see a mix of discover and refresh crawls happening.
However, if they find that certain pages are not updated as frequently, or they crawl very rarely, then they realize they don’t have to crawl these pages all the time.
Another example is a news website. If they have an article that’s published hourly, then they learn that they should crawl the site hourly.
If it updates once a month, then they learn that they should crawl that website once a month.
It’s purely a technical thing, and not a sign of crawling or ranking functions.
This happens at approximately the 5:27 mark in the video.