Upstash
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Redis and vector storage billed per request instead of per idling server — built for functions that sleep most of the day.
Other products from Database
A hosted Postgres with auth, storage, and realtime already wired up — the default pick if you don't want to think about infra.
Postgres that branches like Git and scales to zero, so preview environments stop costing you real money.
Vitess-grade MySQL scaling with schema branching, for when you'd rather not fear your next migration.
SQLite pushed to the edge and multiplied by thousands — built for per-tenant databases, not one big cluster.