Data backup method, storage medium, and computing device

Patent metadata

Field	Value
Publication number	US-11494270-B2
Application number	US-202017065883-A
Country	US
Kind code	B2
Filing date	Oct 8, 2020
Priority date	Sep 30, 2018
Publication date	Nov 8, 2022
Grant date	Nov 8, 2022

Abstract

A data backup method includes querying a first block of a first blockchain for unused transaction output information based on a first condition being met, the first block including each block of all blocks included in the first blockchain; generating transaction information according to the unused transaction output information obtained based on the querying, the transaction information indicating a transaction operation based on an account address to which the unused transaction output information belongs; recording the transaction information in a second block and releasing the second block, and recording the second block on which a consensus is reached on a second blockchain; and backing up the first blockchain into a storage system, and deleting the first blockchain. Counterpart apparatus, terminal, server, and/or non-transitory computer-readable medium are also contemplated.

First claim

What is claimed is:

1. A data backup method, performed by a terminal, the method comprising:
querying a first block of a first blockchain for unused transaction output information based on a first condition being met, the first block comprising each block of all blocks included in the first blockchain;
generating transaction information according to the unused transaction output information obtained based on the querying, the transaction information indicating a transaction operation based on an account address to which the unused transaction output information belongs;
recording the transaction information in a second block and releasing the second block, and recording the second block on which a consensus is reached on a second blockchain; and
backing up the first blockchain into a storage system, and deleting the first blockchain.

2. The method according to claim 1 , wherein the first condition comprises a condition that a block height of the first blockchain reaches a preset value.

3. The method according to claim 1 , wherein the first condition comprises at least one of a condition that a remaining storage space is lower than a first threshold, a condition that a set time interval is reached, or a condition that a set operation instruction is received.

4. The method according to claim 1 , wherein a block height of the second block corresponds to a block height of a last block in the first blockchain.

5. The method according to claim 1 , wherein a block header eigenvalue of a parent block included in the second block is a block header eigenvalue of a last block in the first blockchain.

6. The method according to claim 1 , wherein the backing up comprises:
recording, in a data backup table, identification information of each block in the first blockchain and a storage address of each block in the storage system.

7. The method according to claim 6 , further comprising, after the first blockchain is deleted:
querying the data backup table for a storage address corresponding to identification information of a block included in the first blockchain, and accessing the block in the storage system according to the storage address.

8. A non-transitory computer-readable storage medium storing instructions, the instructions, when executed by one or more processors, causing at least one of the one or more processors to perform:
querying a first block of a first blockchain for unused transaction output information based on a first condition being met, the first block comprising each block of all blocks included in the first blockchain;
generating transaction information according to the unused transaction output information obtained based on the querying, the transaction information indicating a transaction operation based on an account address to which the unused transaction output information belongs;
recording the transaction information in a second block and releasing the second block, and recording the second block on which a consensus is reached on a second blockchain; and
backing up the first blockchain into a storage system, and deleting the first blockchain.

9. The storage medium according to claim 8 , wherein the first condition comprises at least one of a condition that a block height of the first blockchain reaches a preset value; a condition that a remaining storage space is lower than a first threshold; a condition that a set time interval is reached; or a condition that a set operation instruction is received.

10. The storage medium according to claim 8 , wherein a block height of the second block corresponds to a block height of a last block in the first blockchain.

11. The storage medium according to claim 8 , wherein a block header eigenvalue of a parent block included in the second block is a block header eigenvalue of a last block in the first blockchain.

12. The storage medium according to claim 8 , wherein the instructions are configured to cause at least one of the one or more processors to perform the backing up by recording, in a data backup table, identification information of each block in the first blockchain and a storage address of each block in the storage system.

13. The storage medium according to claim 12 , wherein the instructions are further configured to cause at least one of the one or more processors to perform:
after the first blockchain is deleted, querying the data backup table for a storage address corresponding to identification information of a block included in the first blockchain, and accessing the block in the storage system according to the storage address.

14. A computing device comprising:
at least one memory configured to store program code; and
at least one processor configured to read the program code and operate as instructed by the program code, the program code comprising:
first querying code configured to cause at least one of the at least one processor to query a first block of a first blockchain for unused transaction output information based on a first condition being met, the first block comprising each block of all blocks included in the first blockchain;
generating code configured to cause at least one of the at least one processor to generate transaction information according to the unused transaction output information obtained based on querying of the first querying code, the transaction information indicating a transaction operation based on an account address to which the unused transaction output information belongs;
first recording code configured to cause at least one of the at least one processor to record the transaction information in a second block and releasing the second block, and recording the second block on which a consensus is reached on a second blockchain; and
backup code configured to cause at least one of the at least one processor to back up the first blockchain into a storage system, and deleting the first blockchain.

15. The computing device according to claim 14 , wherein the first condition comprises a condition that a block height of the first blockchain reaches a preset value.

16. The computing device according to claim 14 , wherein the first condition comprises at least one of a condition that remaining storage space is lower than a first threshold; a condition that a set time interval is reached; or a condition that a set operation instruction is received.

17. The computing device according to claim 14 , wherein a block height of the second block corresponds to a block height of a last block in the first blockchain.

18. The computing device according to claim 14 , wherein a block header eigenvalue of a parent block included in the second block is a block header eigenvalue of a last block in the first blockchain.

19. The computing device according to claim 14 , wherein the program code further comprises:
second recording code configured to cause at least one of the at least one processor to record, in a data backup table, identification information of each block in the first blockchain and a storage address of each block in the storage system.

20. The computing device according to claim 19 , wherein the program code further comprises:
second querying code configured to cause at least one of the at least one processor to, after the first blockchain is deleted, query the data backup table for a storage address corresponding to identification information of a block included in the first blockchain, and access the block in the storage system according to the storage address.

Assignees

• Tencent Tech Shenzhen Company Ltd

Inventors

• Guo Rui
• Li Mao Cai
• Wang Zong You
• Tu Hai Tao
• Kong Li
• Zhou Kai Ban
• Yang Chang Qing
• Wang Nan
• Ding Yong
• Shi yi fang

Classifications

• G06F11/1458 Primary

  Management of the backup or restore process · CPC title

• G06F11/1451 Primary

  by selection of backup contents · CPC title

• G06Q2220/00

  Business processing using cryptography · CPC title

• G06F3/0671

  In-line storage system · CPC title

• G06F16/2455

  Query execution · CPC title