Even after providing firebase endpoint, crawlers come to the site ?

Most crawlers have no concept of what that is. They will follow links to this site and then follow links out of this site even after being told not to [1]. The majority of crawlers follow zero rules, RFC's, etc... The few platforms that do follow standards and rules are akin to a law abiding citizen in Mos Eisley.

[1] - rel="nofollow"

Oh my god. It's the crawlopalypse.

Yes. It's hard to explain the experience of hosting a website since 2023.

A crazy amount of really dumb bots loading every url on the website in a full headless browser, with default Chrome user-agent string. All different ip addresses, various countries and ASNs.

These crawlers are completely automated and simply crawl _everything_ and don't care at all if there's value in what they're crawling or if there's duplicate content, etc.

There's no attempt at efficiency, just blindly crawl the entire internet 24/7. Every page load (1 per second or more?) is from a different ip address.

Unfortunately, the firebase API is very bad as they even acknowledge that in their github page.