SaloniiSharmaa commented on PR #55344:
URL: https://github.com/apache/airflow/pull/55344#issuecomment-3264710689

   Thanks for raising these points! From what I understood:
   
   - If a key expires, it’s mostly temporary runtime stuff (queues/locks) that 
goes — task history + XCom stay safe in the metadata DB.
   
   - So yeah, task history/XComs aren’t affected.
   
   - TTL should be set long enough to cover your longest DAG runs/retries, so 
nothing expires mid-flight.
   
   I will update the doc with these clarifications if this makes sense 


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