QStash · Rate Limits

Qstash Rate Limits

Name: Qstash Rate Limits
Creator: QStash
Keywords: Message Queue, Task Scheduling, Serverless, HTTP Messaging, Background Jobs, Webhooks, Dead Letter Queue, CRON, Upstash

Rate limits for the QStash API. Operational message publishing APIs have no requests-per-second limit. Management and listing endpoints enforce burst rate limits with a 1-second window. Daily message quotas are enforced per plan. Flow-control features allow users to define their own per-key rate limits and parallelism caps for message delivery.

Qstash Rate Limits is the machine-readable rate-limit profile for QStash on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 10 rate-limit definitions.

Tagged areas include Message Queue, Task Scheduling, Serverless, HTTP Messaging, and Background Jobs.

10 Limits

Message QueueTask SchedulingServerlessHTTP MessagingBackground JobsWebhooksDead Letter QueueCRONUpstash

Limits

Operational API RPS Limit global

unlimited

Management API Burst Limit per-account

Daily Message Limit - Free Plan per-account

1000

Daily Message Limit - Fixed 1M Plan per-account

1000000

Daily Message Limit - Fixed 10M Plan per-account

10000000

Flow Control - User-Defined Rate Limit per-flow-control-key

Multiple messages sharing the same FlowControl key contribute to the same rate count. This is a user-configured limit, not an Upstash-enforced infrastructure cap.

Flow Control - User-Defined Parallelism per-flow-control-key

Parallelism limits are user-defined and not tied to plan tier. They allow workload shaping without infrastructure-level restrictions.

Max Message Size - Free Plan per-message

Max Message Size - Pay As You Go Plan per-message

Max Message Size - Fixed Plans per-message