hodlbod on Nostr: Nostr has millions (and someday billions) of notes you might want to query based on ...

Nostr has millions (and someday billions) of notes you might want to query based on arbitrary criteria. Feeds over a local database have the same problem any "global" feed has on nostr. If you don't know where to look, you have no guarantee you have everything you need. At some point, requests have to be built to fetch data from relays. Otherwise, you have to either sync with the entire network, or arbitrarily limit your feed to data at hand.