Pass exclusive keys to triggered DAGs:
In Apache Airflow, tasks are isolated by design. This isolation is great for reliability, but it creates a challenge when one task needs to share information—like a filename, a record count, or a status flag—with a downstream task. (short for "cross-communication") is the built-in mechanism that solves this problem. What is XCom? airflow xcom exclusive
# Pushing XCom (implicitly via return) def push_task(**context): return "some_value" Pass exclusive keys to triggered DAGs: In Apache
The modern TaskFlow API simplifies data passing. When you return a value from a decorated @task , Airflow creates an implicit connection. : You don't manually call xcom_pull . a record count