Patent ID: 11921629
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 2:
3. The method of claim 1, wherein:
determining the expected expiration time of the new data file comprises:
predicting lifetime information of the new data file based on first lifetime information, second lifetime information, or third lifetime information determined from the recorded attribute information of the data files; and
determining the expected expiration time of the new data file based on a creation time of the new data file and the predicted lifetime information of the new data file,

the first lifetime information is of the expired data files of the level where the new data file is located,
the second lifetime information is of unexpired data files of the level where the new data file is located, and
the third lifetime information is of unexpired data files of a level above the level where the new data file is located.