with any DB there is always going to be a ceiling where you must eventually start splitting into clusters

but NFDB makes this a very hard problem to reach, and even if you do there are many solutions:

1. You can shard indexes across clusters with very little changes

2. Events can also be stored in a blob store

this gives up strong consistency in certain contexts but also is extremely manageable, compared to say, trying to split events into 8 different relays

then you would have to query 8 relays for each request

but with NFDB the only difference is index reads now happen to a different cluster and there is no request or resource amplification