Airflow 101 Architecture of Apache Airflow

What You’ll Learn:

1. Architecture Overview:
   • Understand the top-level architecture of Apache Airflow and the roles of its four key components.
   • Explore the multi-node setup and how different components interact across nodes.
2. Web Server:
   • Experience the stateless web application that empowers users with job management capabilities.
   • Learn how to interact with Airflow’s meta-database and monitoring features via the web server interface.
3. Scheduler:
   • Discover the multi-threaded Python process responsible for scheduling and task execution.
   • Gain insights into how the scheduler interacts with the database and manages task dependencies.
4. Database:
   • Learn about Airflow’s database usage for storing job details, variables, and connections.
   • Explore recommended database options and their advantages, with a focus on PostgreSQL.
5. Executor:
   • Understand the role of the executor in task execution and its interaction with the scheduler and workers.
   • Explore different executor types, including the default sequential executor and the recommended Celery executor for production environments.