Airflow Xcom Exclusive May 2026

Modern Airflow (2.0+) makes XComs nearly invisible. By using the @task decorator, Airflow handles the "push" and "pull" exclusively between the functions you connect.

Instead of relying on the default return_value , use specific keys for important metadata. This makes your DAG's "XCom" tab in the UI much easier to audit. airflow xcom exclusive

Since XComs live in your Airflow backend (Postgres/MySQL), pushing large objects (like full DataFrames) can crash your scheduler. Exclusive management involves: Modern Airflow (2