Which orchestration tool is better: Airflow, Prefect, Argo Workflows, or Temporal?¶
Nowadays there are many tools for task orchestration. Some popular ones include Airflow, Prefect, Argo Workflows, and Temporal. Now the question is which tool should I use in my team?
Here I will briefly list the features of the four task orchestration tools. Hopefully this will help you decide which tool is best for your task scheduling.
Airflow¶
Airflow is a popular task scheduling tool. The data workflows in Airflow are defined using Python.
It has a large user base but also has some limitations as it was created earlier than other orchestration tools:
DAGs are not parameterized - you can't pass parameters into your workflows
DAGs are static - it can't automatically create new steps at runtime as needed
We have to package the entire workflow into one container
Prefect¶
Prefect was created to overcome some of the limitations in Airflow, with a strong emphasis on ease of use and deployment, especially for complex DAGs.
Some features of Prefect:
Workflows are defined in Python, parameterized and dynamic
Can run each step in a container, but need to register docker with workflows in Prefect
Uses state management abstractions that allow for easy retries and failure handling within data workflows
Has built-in integrations with popular data engineering tools and platforms, such as Dask, DBT, and various cloud services
Argo Workflows¶
Argo Workflows is a container-native workflow engine for orchestrating jobs on Kubernetes. It naturally addresses the deployment issue in Airflow and Prefect.
Workflows are defined in YAML
Every step in an workflow is run in its own container
Relies on Kubernetes for state management
Can only run on Kubernetes clusters
Temporal¶
While Airflow, Prefect and Argo Workflows focus primarily on data workflow orchestration, Temporal is a more general-purpose workflow tool.
Workflows are defined using the language for the tasks
Provides robust features for state management, retries, and long-running processes
Requires more investment in learning - has a steep learning curve
Summary¶
As we can see, each tool has its own use cases. We need to select the tool that is most suitable for our work.
If our tasks are about data processing, we perhaps should consider Airflow, Prefect or Argo Workflows.
If we already have our tasks running on Kubernetes cluster, for easy of deployment we might choose Argo Workflows.
If our tasks are more general and require high robustness and reliability, we had better to use Temporal.
If our workflows are complex, a tool using a programming language instead of yaml files might be more suitable.
If our workflows are simple and we do not want to invest too much time in learning, a tool with ease of use might be the best choice.
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