Method for managing backup data by having space recycling operations on executed backup data blocks

An electronic device, comprising:

• at least one processing unit;
• and
• at least one memory, the at least one memory being coupled to the at least one processing unit and storing instructions to be executed by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to execute actions, the actions comprising:
• determining a number of times of space recycling operations that have been executed on a backup data block;
• determining, based on the number of times, a current popularity of the backup data block, the current popularity at least indicating a probability that the backup data block will be recycled in a to-be-executed space recycling operation;
• and
• moving, based on a determination that a former storage area where the backup data block is located does not correspond to the current popularity, the backup data block to a target storage area corresponding to the popularity.

A computer program product, the computer program product being stored in a non-transitory computer storage medium and comprising machine-executable instructions, the machine-executable instructions, when running in a device, causing the device to perform actions, the actions comprising:

• determining a number of times of space recycling operations that have been executed on a backup data block;
• determining, based on the number of times, a current popularity of the backup data block, the current popularity at least indicating a probability that the backup data block will be recycled in a to-be-executed space recycling operation;
• and
• moving, based on a determination that a former storage area where the backup data block is located does not correspond to the current popularity, the backup data block to a target storage area corresponding to the popularity.