Apache NiFi vs Dagster
A side-by-side comparison of two self-hosted automation & workflows options — licensing, setup difficulty, resource needs, and what each one replaces.
Dagster
Data orchestrator for the full development lifecycle
| Feature | Apache NiFi | Dagster |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 91 · Excellent | 95 · Excellent |
| Category | Automation & Workflows | Automation & Workflows |
| License | Apache-2.0 | Apache-2.0 |
| Language | Java | Python |
| Setup difficulty | Hard | Medium |
| Min. RAM | 2,048 MB | 2,048 MB |
| Deployment | docker, kubernetes, bare-metal | docker, kubernetes, helm |
| GitHub stars | ★ 6,242 | ★ 16,199 |
| First released | 2014 | 2019 |
| Replaces | Azure Data Factory, Zapier | AWS Step Functions, Azure Data Factory |
What are Apache NiFi and Dagster?
Apache NiFi
Apache NiFi is a system to automate the flow of data between systems through a drag-and-drop interface. It supports routing, transformation and mediation of data with strong provenance tracking.
- Drag-and-drop dataflow design
- Detailed data provenance
- Hundreds of built-in processors
- Backpressure and prioritized queuing
Dagster
Dagster is an orchestration platform for data assets that emphasizes testability and observability. It models pipelines around the assets they produce and can be fully self-hosted.
- Asset-oriented orchestration
- Built-in testing and typing
- Integrated data lineage
- Web-based control plane
Apache NiFi vs Dagster: key differences
Apache NiFi is written in Java, while Dagster is built with Python. Apache NiFi is the more established project (first released 2014), while Dagster arrived in 2019. Dagster has the considerably larger community, at 16,199 GitHub stars versus 6,242.
Why pick each one
Choose Apache NiFi if…
- Powerful visual dataflow
- Strong data lineage
Watch out for
- Resource heavy
- Complex for simple tasks
Choose Dagster if…
- Strong developer tooling
- Great for data-centric teams
Watch out for
- Conceptual model takes time to learn
Frequently asked questions
Is Apache NiFi or Dagster better?
Dagster is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Apache NiFi if its specific feature set fits your needs better.
Are Apache NiFi and Dagster free and open-source?
Yes. Apache NiFi is licensed under Apache-2.0 and Dagster under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Apache NiFi and Dagster with Docker?
Apache NiFi: yes. Dagster: yes.