dagster – dagster-io | 青衣网络

SECTION · 01

关键指标一览

Stars 数

16,027

Forks 数

2,248

Watchers 数

16,027

Issue 数

2,595

主要语言

Python

许可证

Apache-2.0

仓库所有者

dagster-io

创建时间

2018.04.30

更新时间

2026.08.19

主题标签

数据分析 dagster 数据工程数据集成数据编排器数据管道数据科学 ETL 元数据 MLOps 编排 python 调度器工作流工作流自动化

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README 详细介绍

README 原文为英文,如需阅读完整中文内容,建议使用 浏览器翻译插件(如 Edge 浏览器自带翻译、Google 翻译扩展)进行整页翻译。

Dagster is a cloud-native data pipeline orchestrator for the whole development lifecycle, with integrated lineage and observability, a declarative programming model, and best-in-class testability.*

It is designed for developing and maintaining data assets*, such as tables, data sets, machine learning models, and reports.

With Dagster, you declare—as Python functions—the data assets that you want to build. Dagster then helps you run your functions at the right time and keep your assets up-to-date.

Here is an example of a graph of three assets defined in Python:

import dagster as dg
import pandas as pd

from sklearn.linear_model import LinearRegression


@dg.asset
def country_populations() -> pd.DataFrame:
    df = pd.read_html("https://tinyurl.com/mry64ebh")[0]
    df.columns = ["country", "pop2022", "pop2023", "change", "continent", "region"]
    df["change"] = df["change"].str.rstrip("%").astype("float")
    return df


@dg.asset
def continent_change_model(country_populations: pd.DataFrame) -> LinearRegression:
    data = country_populations.dropna(subset=["change"])
    return LinearRegression().fit(pd.get_dummies(data[["continent"]]), data["change"])


@dg.asset
def continent_stats(
    country_populations: pd.DataFrame, continent_change_model: LinearRegression
) -> pd.DataFrame:
    result = country_populations.groupby("continent").sum()
    result["pop_change_factor"] = continent_change_model.coef_
    return result

The graph loaded into Dagster's web UI:

Dagster is built to be used at every stage of the data development lifecycle - local development, unit tests, integration tests, staging environments, all the way up to production.

Quick Start:

If you're new to Dagster, we recommend checking out the docs or following the hands-on tutorial.

Dagster is available on PyPI and officially supports Python 3.9 through Python 3.14.

uv add dagster dagster-webserver dagster-dg-cli

Documentation

You can find the full Dagster documentation here, including the Quickstart guide.

<hr/>

Key Features:

Dagster as a productivity platform

Identify the key assets you need to create using a declarative approach, or you can focus on running basic tasks. Embrace CI/CD best practices from the get-go: build reusable components, spot data quality issues, and flag bugs early.

Dagster as a robust orchestration engine

Put your pipelines into production with a robust multi-tenant, multi-tool engine that scales technically and organizationally.

Dagster as a unified control plane

Maintain control over your data as the complexity scales. Centralize your metadata in one tool with built-in observability, diagnostics, cataloging, and lineage. Spot any issues and identify performance improvement opportunities.

<hr />

Master the Modern Data Stack with integrations

Dagster provides a growing library of integrations for today’s most popular data tools. Integrate with the tools you already use, and deploy to your infrastructure.

Community

Connect with thousands of other data practitioners building with Dagster. Share knowledge, get help,
and contribute to the open-source project. To see featured material and upcoming events, check out
our Dagster Community page.

Join our community here:

Contributing

For details on contributing or running the project for development, check out our [contributing
guide](https://docs.dagster.io/about/contributing).

License

Dagster is Apache 2.0 licensed.

dagster – dagster-io