Upstash

Upstash is a serverless data platform built for developers who deploy at the edge. Its flagship product is a Redis-compatible database that talks over HTTP instead of a persistent TCP connection, which makes it work inside serverless and edge runtimes where traditional Redis breaks. Around that core it has added QStash (a serverless message queue and scheduler), Upstash Vector (a serverless vector database), Search, and Workflow (durable serverless functions). Everything is priced per request with a guaranteed cap, so developers start free and pay only for what they use. Founded in 2020 by ex-Hazelcast engineers, Upstash powers Vercel KV under the hood and reached $1M ARR two years after its seed round.