What it is
Inngest turns ordinary functions into durable, event-triggered steps: each step boundary is checkpointed, so a retry resumes from the last completed step instead of the beginning. Flow control — concurrency limits, throttling, debouncing and fan-out — is declared alongside the function rather than built by hand. Functions run on your existing HTTP endpoints, so there is no separate worker fleet.
Best for
Adding retries, concurrency limits and long waits to AI workflows that already live inside a serverless application.
Where it falls short
Reasoning about execution locally gets harder as steps multiply, and scheduling depends on a hosted control plane you do not run.
Characteristics
- durable-functions
- event-driven
- concurrency-control
- serverless
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