How often is "/me/drive/recent" refreshed?

I am using a Microsoft Graph query: "/v1.0/me/drive/recent". It returns a set of documents as expected BUT:

More than 24 hours ago, I did the following:

1. I deleted a SharePoint site. The recent query is still returning results from the deleted SharePoint site.
2. I added documents to a MS Teams SharePoint site. Those documents are not being returned.

How often is "/v1.0/me/drive/recent" query updated?