Inngest Event Platform

Inngest is a developer-first event-driven platform created by Dan Farrelly, Tony Holdstock-Brown, and Jeremy Cline in 2021, providing durable execution, background jobs, queues, cron schedules, and event-driven workflows for serverless and edge computing environments, designed to solve the challenges of executing long-running and multi-step functions in serverless architectures where execution time limits prevent complex workflows, adopted by Hashnode, Unkey, and over two thousand organizations for their background processing needs. The event-driven architecture enables functions to be triggered by events, with the platform managing event ingestion, function execution, state persistence, and retry handling, with events published through the Inngest SDK triggering subscribed functions automatically, enabling decoupled, event-driven architectures without managing message queues, workers, or retry logic. The durable execution persists function state after each step, enabling automatic recovery from failures, with the step.run, step.sleep, step.waitForEvent, and step.send primitives providing building blocks for complex workflows, including multi-step sequences with conditional branching, waiting for external events with timeouts, parallel execution of independent steps, and fan-out for processing multiple items. The scheduling system supports cron expressions for recurring tasks and delayed execution through step.sleep, with the platform handling timezone conversion, missed execution detection, and overlap prevention. The local development server simulates event triggers and function execution. The dashboard for monitoring executions. The concurrency control. The rate limiting. The fan-out for batch processing. Designed for serverless developers.