Stream is a data table attribute used for real-time analysis of incremental data streams and incremental data synchronization.
You can enable the Stream feature when creating a data table. For more information, see Table Store Stream.
Stream Expiration Time indicates the duration that the incremental data remains valid. It is set when the Stream feature is enabled.
The expiration time duration is represented in hours and can be set to a maximum of 24 hours. For example, set the expiration time to 24 if you want the data to remain valid for a duration of 24 hours.
Table Store clears the incremental data beyond the expiration time so that expired data cannot be queried. This feature makes available storage space for other incremental data.
You can disable and then re-enable Stream to change the expiration time duration. Once Stream is enabled again, the previous data cannot be queried.