Method, device and computer program product for managing data backup

1. A method of managing data backup, comprising:

obtaining, via an application programming interface, a first set of performance parameters of a backup client prior to performing a data backup, the backup client being configured to transmit data to a backup server for backup and record information about the data in a cache to avoid duplicate data being transmitted to the backup server, wherein the first set of performance parameters includes at a first available capacity of the cache;

determining, from a plurality of sets of historical performance parameters collected during multiple historical data backups performed by the backup client, at least one set of historical performance parameters similar to the first set of performance parameters;

determining, from the at least one set of historical performance parameters, a set of historical performance parameters indicating the best performance, wherein the set of historical performance parameters includes at least a second available capacity of the cache; and

adjusting, based on the set of historical performance parameters, the first available capacity of the cache to the second available capacity, wherein the cache is to be used in the data backup.

2. The method of claim 1 , further comprising:

prior to determining the at least one set of historical performance parameters,

determining a data type to which the data backup is directed; and

obtaining the plurality of sets of historical performance parameters collected during the multiple historical data backups performed by the backup client for the data type.

3. The method of claim 1 , wherein one of the plurality of sets of historical performance parameters comprises:

average memory usage of the backup client during a corresponding historical data backup,

average CPU usage of the backup client during the corresponding historical data backup,

an available capacity of the cache used in the corresponding historical data backup, and

average data access performance of the backup client during the corresponding historical data backup.

4. The method of claim 3 , wherein the first set of performance parameters comprises:

memory usage at the backup client,

CPU usage at the backup client,

an available capacity of the cache prior to the data backup, and

data access performance at the backup client.

5. The method of claim 4 , wherein determining the at least one set of historical performance parameters comprises:

determining respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters;

ranking the plurality of sets of historical performance parameters based on the respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters; and

selecting, based on a result of the ranking and from the plurality of sets of historical performance parameters, the at least one set of historical performance parameters similar to the first set of performance parameters.

6. The method of claim 5 , wherein determining the respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters comprises:

for a given set of historical performance parameters among the plurality of sets of historical performance parameters,

determining a similarity between the first set of performance parameters and the given set of historical performance parameters based on at least the average memory usage and the average CPU usage in the given set of historical performance parameters and the memory usage and the CPU usage in the first set of performance parameters.

7. The method of claim 3 , wherein determining the set of historical performance parameters indicating the best performance comprises:

determining, from the at least one set of historical performance parameters, the set of historical performance parameters associated with a best average data access performance.

8. The method of claim 1 , wherein the set of historical performance parameters comprises an available capacity of the cache used in a corresponding historical data backup, and adjusting the available capacity of the cache to be used in the data backup comprises:

adjusting, based on the available capacity of the cache used in the corresponding historical data backup, the available capacity of the cache to be used in the data backup.

9. The method of claim 1 , further comprising:

performing the data backup based on the adjusted available capacity of the cache; and

collecting a second set of performance parameters of the backup client during the data backup.

10. The method of claim 9 , wherein the second set of performance parameters comprises:

average memory usage of the backup client during the data backup,

average CPU usage of the backup client during the data backup,

the adjusted available capacity of the cache, and

average data access performance of the backup client during the data backup.

11. An electronic device, comprising:

at least one processing unit;

at least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the electronic device to perform acts comprising:

obtaining, via an application programming interface, a first set of performance parameters of a backup client prior to performing a data backup, the backup client being configured to transmit data to a backup server for backup and record information about the data in a cache to avoid duplicate data being transmitted to the backup server, wherein the first set of performance parameters includes at a first available capacity of the cache;

determining, from a plurality of sets of historical performance parameters collected during multiple historical data backups performed by the backup client, at least one set of historical performance parameters similar to the first set of performance parameters;

determining, from the at least one set of historical performance parameters, a set of historical performance parameters indicating the best performance, wherein the set of historical performance parameters includes at least a second available capacity of the cache; and

adjusting, based on the set of historical performance parameters, the first available capacity of the cache to the second available capacity, wherein the cache is to be used in the data backup.

12. The electronic device of claim 11 , wherein the acts further comprise:

prior to determining the at least one set of historical performance parameters,

determining a data type to which the data backup is directed; and

obtaining the plurality of sets of historical performance parameters collected during the multiple historical data backups performed by the backup client for the data type.

13. The electronic device of claim 11 , wherein one of the plurality of sets of historical performance parameters comprises:

average memory usage of the backup client during a corresponding historical data backup,

average CPU usage of the backup client during the corresponding historical data backup,

an available capacity of the cache used in the corresponding historical data backup, and

average data access performance of the backup client during the corresponding historical data backup.

14. The electronic device of claim 13 , wherein the first set of performance parameters comprises:

memory usage at the backup client,

CPU usage at the backup client,

an available capacity of the cache prior to the data backup, and

data access performance at the backup client.

15. The electronic device of claim 14 , wherein determining the at least one set of historical performance parameters comprises:

determining respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters;

ranking the plurality of sets of historical performance parameters based on the respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters; and

selecting, based on a result of the ranking and from the plurality of sets of historical performance parameters, the at least one set of historical performance parameters similar to the first set of performance parameters.

16. The electronic device of claim 15 , wherein determining the respective similarities between the first set of performance parameters and the plurality of sets of historical performance parameters comprises:

for a given set of historical performance parameters among the plurality of sets of historical performance parameters,

determining a similarity between the first set of performance parameters and the given set of historical performance parameters based on at least the average memory usage and the average CPU usage in the given set of historical performance parameters and the memory usage and the CPU usage in the first set of performance parameters.

17. The electronic device of claim 13 , wherein determining the set of historical performance parameters indicating the best performance comprises:

determining, from the at least one set of historical performance parameters, the set of historical performance parameters associated with a best average data access performance.

18. The electronic device of claim 11 , wherein the set of historical performance parameters comprises an available capacity of the cache used in a corresponding historical data backup, and adjusting the available capacity of the cache to be used in the data backup comprises:

adjusting, based on the available capacity of the cache used in the corresponding historical data backup, the available capacity of the cache to be used in the data backup.

19. The electronic device of claim 11 , wherein the acts further comprise:

performing the data backup based on the adjusted available capacity of the cache; and

collecting a second set of performance parameters of the backup client during the data backup.

20. The electronic device of claim 19 , wherein the second set of performance parameters comprises:

average memory usage of the backup client during the data backup,

average CPU usage of the backup client during the data backup,

the adjusted available capacity of the cache, and

average data access performance of the backup client during the data backup.

21. A computer program product being tangibly stored on a non-transitory computer-readable medium and comprising machine-executable instructions which, when executed by a device, cause the device to perform operations, the operations comprising:

obtaining, via an application programming interface a first set of performance parameters of a backup client prior to performing a data backup, the backup client being configured to transmit data to a backup server for backup and record information about the data in a cache to avoid duplicate data being transmitted to the backup server, wherein the first set of performance parameters includes at a first available capacity of the cache;

determining, from a plurality of sets of historical performance parameters collected during multiple historical data backups performed by the backup client, at least one set of historical performance parameters similar to the first set of performance parameters;

determining, from the at least one set of historical performance parameters, a set of historical performance parameters indicating the best performance, wherein the set of historical performance parameters includes at least a second available capacity of the cache; and

adjusting, based on the set of historical performance parameters, the first available capacity of the cache to the second available capacity, wherein the cache is be used in the data backup.