Inngest

Inngest lets you run background jobs and durable workflows as plain functions in your own app: wrap work in steps with step.run(...), trigger functions with events or cron, and Inngest retries each step independently, survives deploys and serverless timeouts, and shows every run's full history.

Your functions live in your codebase (Next.js, Node, Python, Go, Elixir) behind a serve endpoint — no separate worker fleet to manage — with a local Dev Server for development and Inngest Cloud or a self-hosted server (SSPL-licensed) for production.

1. Start the local Dev Server (no account needed): npx inngest-cli@latest dev — dashboard at http://localhost:8288.
2. Install the SDK in your app, e.g. npm install inngest (Python: pip install inngest, plus Go/Elixir SDKs).
3. Create an Inngest client, define a function with step.run(...) steps, and expose the serve handler (e.g. /api/inngest route in Next.js).
4. Point your app at the local Dev Server: set INNGEST_DEV=1 (v4 SDK) in .env.local and run your app's dev server.
5. Trigger the function from the Dev Server UI (Invoke tab) or by sending an event with inngest.send(...); inspect steps, retries, and timelines in the Runs tab.
6. For production: create an Inngest Cloud account, add event + signing keys, and sync your app — or self-host the OSS server (SSPL license).