Airflow Xcom Exclusive < FREE • 2026 >
Mastering Apache Airflow XComs: Managing Exclusive Data Exchange
Basic Syntax
Step 4: Enforce with Lint Rules
9. Summary Table: XCom Access Modes
Cloud Storage
: Use the XComObjectStorageBackend to store larger data exclusively in S3 or GCS while only keeping a reference in the metadata DB. airflow xcom exclusive
); anything smaller stays in the DB, while larger objects are offloaded to storage automatically. Apache Airflow Modern Usage: TaskFlow API Starting with Airflow 2.0, the TaskFlow API anything smaller stays in the DB
@task(retries=0) def fetch_transactions(**context): df = query_db() # Push allowed only to key "raw_txns" context["ti"].xcom_push(key="raw_txns", value=df.to_json()) return "done" value=df.to_json()) return "done" t1 >
t1 >> t2 >> t3
