公开(公告)号：US11782793B2

公开(公告)日：2023-10-10

申请号：US17740925

申请日：2022-05-10

Applicant: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

Inventor： Maocai Li ,  Changqing Yang ,  Kaiban Zhou ,  Qucheng Liu ,  Gengliang Zhu ,  Jinsong Zhang ,  Huankun Huang

IPC: G06F16/20 ,  G06F11/14 ,  G06F16/27 ,  G06Q20/38

CPC classification number: G06F11/1446 ,  G06F16/27 ,  G06F2201/84 ,  G06Q20/389

Abstract: A blockchain-based data snapshot method, performed by a consensus node in a blockchain network, includes: obtaining a snapshot trigger instruction and a trigger moment of the snapshot trigger instruction; performing snapshot processing on one or more transaction blocks in a ledger at the trigger moment, to obtain a snapshot account state of a transaction account, the snapshot account state being account data related to transaction data in the transaction blocks; obtaining a write-ahead logging (WAL) log of a target block, the target block being a block with a highest block height in the transaction blocks, the WAL log including a log of account data corresponding to the target block; and correcting dirty data in the snapshot account state according to the WAL log, to obtain a corrected snapshot account state, the dirty data being generated based on incomplete transaction data in the target block included in the ledger.