* Inngest is fully event driven, with replays, fan-outs, `step.waitForEvent` to automatically pause and resume durable functions when specific events are received, declarative cancellation based off of events, etc.
* We have real-time metrics, tracing, etc. out of the box in our UI
* Out of the box support for TS, Python, Golang, Java. We're also interchangeable with zero-downtime language and cloud migrations
* I don't know Hatchet's local dev story, but it's a one-liner for us
* Batching, to turn eg. 100 events into a single execution
* Concurrency, throttling, rate limiting, and debouncing, built in and operate at a function level
* Support for your own multi-tenancy keys, allowing you to create queues and set concurrency limits for your own concurrency
* Works serverless, servers, or anywhere
* And, specifically, it's all procedural and doesn't have to be a DAG.
We've also invested heavily in flow control — the aspects of batching, concurrency, custom multi-tenancy controls, etc. are all things that you have to layer over other systems.
I expect because we've been around for a couple of years that newer folks like Hatchet end up trying to replicate some of what we've done, though building this takes quite some time. Either way, happy to see our API and approach start to spread :)