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Inngest · Concept

Concurrency scope

Inngest concurrency limits how many steps of a function execute at once. Extra steps wait for capacity, and an optional key gives each unique value its own limit.

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Syntax

inngest.createFunction({ id: string, concurrency: { limit: number, key?: expression } }, ...handlers)

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  • concurrency guide
  • flow control
  • durable execution
  • createFunction configuration

Source: Managing concurrency. Checked 2026-11-03.