Understanding Apache Airflow DAGs: Structure, Communication, and Deployment

Short summary

Apache Airflow uses DAGs (Directed Acyclic Graphs) to organize and execute data pipeline tasks in a specific sequence without circular dependencies. XCom (Cross-Communication) enables isolated tasks to share data between stages. For production deployment, SCP transfers DAG files securely, nohup keeps services running in the background, and systemd provides automated startup, restart, and monitoring.

• •DAGs define task execution order and dependencies in Airflow
• •XCom enables data sharing between isolated tasks
• •SCP, nohup, and systemd are essential for production deployment

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