Upstash

Serverless data platform offering Redis, Kafka, message queuing, vector search, and workflow orchestration. Delivers key-value, event streaming, and AI embeddings without provisioning or managing infrastructure, with pay-per-use scaling that scales to zero when idle.

Trusted by Supabase, Zapier, Paul Smith, and OpenArt. Upstash stands out with HTTP-based APIs that run in serverless and edge runtimes, including Vercel Functions and Cloudflare Workers, where traditional TCP connections to Redis or Kafka are impractical. Compared to Redis Cloud or self-hosted Kafka, teams avoid instance sizing and capacity planning.

Key capabilities:

• Serverless Redis with global replication and REST API for edge and serverless runtimes
• Serverless Kafka for event streaming without cluster management
• QStash for HTTP-based message queuing and task scheduling
• Vector database and semantic search for AI and LLM applications
• SDKs for TypeScript, Python, Go, and other languages

Common applications: caching and session storage in serverless apps, rate limiting across edge deployments, leaderboards and real-time features, background job processing via QStash, and RAG or semantic search with the vector index. Developers integrate via npm or language-native clients, with no connection pooling or long-lived TCP setup required.