Upstash QStash review
A flexible HTTP message broker for scheduled, retried, and fan-out serverless tasks.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Upstash QStash is a cloud-hosted, HTTP-based messaging and scheduling service for developers building background jobs, webhook systems, service-to-service messaging, and scheduled tasks. It publishes messages to public API endpoints, so it fits serverless applications and other platforms that expose HTTP-accessible consumers without requiring persistent consumer infrastructure. Its web and API access model keeps the product focused on delivering work between services rather than operating a general-purpose messaging environment.
Pricing scales from a Free plan with 1,000 messages per day to Pay as You Go at $1 per 100K messages, with unlimited messages per day and usage-based billing. Fixed 1M costs $180 per month for 1 million messages per day and 1 TB monthly bandwidth, while Fixed 10M costs $420 per month for 10 million messages per day and 5 TB monthly bandwidth. The $200-per-month Prod Pack add-on adds an uptime SLA, SOC 2, encryption at rest, and Prometheus and Datadog integrations. Enterprise includes 100M+ messages daily, unlimited bandwidth, SAML SSO, professional support with SLA, and dedicated resources.
The standout capability is controlled HTTP task delivery: QStash combines automatic retries and callbacks with delayed or cron-based scheduling, FIFO queues, URL Groups for fan-out, flow control for rate and parallelism limits, and dead-letter queues with manual republishing. Message deduplication and signature verification add controls for delivery handling. Choose QStash if your workloads are API-driven and need scheduling, ordering per queue, retries, or fan-out. It is a weaker fit when exactly-once delivery or protocols beyond HTTP are required.
Upstash QStash pros and cons
- Where it wins
- Automatic retries with at-least-once delivery
- FIFO queues, scheduling, fan-out, and flow control
- Dead-letter queues, deduplication, and signature verification
- Where it doesn't
- Delivery is at-least-once, not exactly-once
- The service is cloud-hosted and HTTP-based
- The cheapest paid tier uses usage-based billing
Upstash QStash fact sheet, pricing and score →
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