zero looks insteresting, does it support caching everything that a user might ever need? it says it only store 100MB of cache. But for an 'offline search' feature to work aren't we supposed to cache everything?
Queries span frontend and backend. If a query cannot be resolved entirely on the frontend (due to missing data) it falls back to the backend to get the rest of the results.
The DB is smart enough to understand if a query can be fully or partially resolved client side based on what other queries have already been synced.
browsers limit that storage, what it does is basically offload / re-sync as needed.
can't really work around that, perhaps there could be a mode where if you give your browser FS permissions or something it can make use of more storage.
if you were building an electron app for example you could do this too more easily.
i think one thing to understand is local-first !== local-only. can always use servers for things that make sense.
