Comment by TonyTrapp

Depends on what you are hosting. I found that source code repository viewers in particular (OP mentions Gitea, but I have seen it with others as well) are really troublesome: Each and every commit that exists in your repository can potentially cause dozens if not hundres of new unique pages to exist (diff against previous version, diff against current version, show file history, show file blame, etc...). Plus many repo viewers of them take this information directly from the source repository without much caching involved, as it seems. This is different from typical blogging or forum software, which is often designed to be able to handle really huge websites and thus have strong caching support. So far, nobody expected source code viewers to be so popular that performance could be an issue, but with AI scrapers this is quickly changing.