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Inngest · Concept

Event-driven

Inngest builds fault-tolerant event workflows with durable events, independent retries, idempotent handlers, saved step results, and event replay. These features help workflows recover from temporary failures and support safe business effects when delivery is repeated.

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Syntax

inngest.createFunction({ id, retries }, { event }, async ({ event, step }) => { ... })

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • Retries
  • idempotency keys
  • memoized steps
  • step.run()
  • step.waitForEvent()
  • event replay
  • dead letter queue
  • Inngest dashboard

Source: Building Fault-Tolerant Event-Driven Systems. Checked 2026-11-03.