Upstash QStash
ProductOperating Status: Currently Offered
Serverless HTTP messaging and scheduling for edge computing environments.
Serverless HTTP messaging and scheduling for edge computing environments.
QStash is engineered specifically for serverless architectures where traditional message queues requiring persistent TCP connections are impractical. Being 100% HTTP-based, it integrates seamlessly with AWS Lambda, Cloudflare Workers, Vercel Functions, Fastly Compute@Edge, Deno Deploy, and client-side applications. Developers publish messages via HTTP to QStash, which durably stores them and delivers them to destination endpoints with configurable retries, exponential backoff, and automatic dead-letter queueing for failed deliveries.
The platform includes advanced features such as flow control for rate limiting and parallelism management, batch message publishing, queues for ordered processing, URL groups for multi-destination fan-out, and cron-based scheduling for recurring tasks. QStash is the foundational messaging layer that powers Upstash Workflow, and it is used for background job processing, webhook delivery, serverless cron jobs, deferred tasks, and reliable inter-service communication in microservices architectures.
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