Airflow: Xcom Exclusive

: While Airflow uses its metadata database (e.g., PostgreSQL or MySQL) by default, you can configure a Custom XCom Backend to store data in external systems like S3 or GCS. This is essential for bypassing database size limits when passing larger objects like Pandas DataFrames.

To get the most out of Airflow XCom exclusive, follow these best practices: airflow xcom exclusive

Exclusive mode is achieved by implementing a custom backend that in the DAG's task_annotations or via a new XComExclusiveOperator . : While Airflow uses its metadata database (e