Inngest

Inngest runs durable functions. An application defines functions as steps with triggers such as events or cron schedules, sends events to the Inngest server, and the server schedules and queues the function runs, retries failed steps and records run history. Functions are written with the language SDKs for TypeScript and JavaScript, Python, Go, and Kotlin and Java. The server is a single binary that serves the Event API, the API and a dashboard. It keeps its data in SQLite by default, can use PostgreSQL for persistence, and runs an in-memory Redis server unless one is configured. The self-hosting guide describes Docker, Docker Compose, binary and Helm routes, and the README adds npm.

Worth knowing

The server and CLI are licensed under the Server Side Public License with delayed open source publication, and the SDKs under Apache 2.0. The self-hosting guide says the support team does not guarantee direct support for self-hosted instances and points dedicated support to enterprise options. The vendor also runs a hosted platform, described on the pricing page.