I haven't used nostrdb myself but architecturally I think it is spot on. I did something similar with

GitHub

GitHub - mikedilger/pocket: nostr types and storage

nostr types and storage. Contribute to mikedilger/pocket development by creating an account on GitHub.

which is used by

GitHub

GitHub - mikedilger/chorus: Chorus is a nostr relay

Chorus is a nostr relay. Contribute to mikedilger/chorus development by creating an account on GitHub.

i need a nostrdb inside sticker