(short for Cross-Communication ) is a mechanism in Apache Airflow that allows tasks within a DAG to exchange small pieces of data. It acts as a message board where one task can push data (key-value pair) and another task can pull that data.
This is distinct from passing data between functions in a standard Python script. In Airflow, tasks often run on different machines (workers) at different times, so standard memory variables cannot be shared. XCom bridges this gap. airflow xcom exclusive
Exclusive mode shines when data volume or concurrency is high. (short for Cross-Communication ) is a mechanism in