Just reviving this thread, because I'm curious about what aspect of the Firestore pricing/costs makes it non-viable for hosting nodeBB ??

Given that IO requests are priced at around 10 cents (avg) per 100,000 requests - is it because nodeBB requires thousands of datastore IO requests per page view? Why is that? Is it fairly, datastore heavy in terms of how it builds a page for each user?

Looking to see if it would be possible to write my own database driver for NodeBB to run on AppEngine and use the Firestore as the database?

Any tips or thoughts before I start on that journey....