Tencent Technology (shenzhen) Company Limited

Bing Shao

Jing Liu

Jianjun Zhang

Bengbeng Su

Zhuguang Shao

Embodiments of this application disclose a node selection method performed by a first node in a blockchain. In the embodiments of this application, nodes in a blockchain are grouped in an order of attribute weights of the nodes, to obtain a plurality of node groups. A node group whose attribute weight meets a preset condition is selected from the plurality of node groups, to obtain a target node group, and a preset quantity of candidate consensus nodes are selected from the target node group. A non-candidate consensus node in the target node group is stored into an initial node group. The initial node group is used as a new target node group, and the operation of selecting a candidate consensus node from the target node group is performed. Candidate consensus nodes are broadcast to one or more second nodes in the blockchain for verification.

Node selection method and apparatus, first node, storage medium, and program product

The present disclosure relates to a transaction processing method and apparatus. The transaction processing method includes: obtaining a first block to be uploaded; when it is determined that the first block meets a first capacity expansion condition, determining, from nodes of the blockchain and based on the first capacity expansion condition, a first node for performing filter expansion; obtaining a first capacity-expanded filter from the first node, a capacity of the first capacity-expanded filter being greater than a capacity of a first in-process filter in the execution node, and the first capacity-expanded filter being generated by the first node based on transactions having been uploaded to the blockchain; and loading a transaction in the first block to the first capacity-expanded filter, and using the first capacity-expanded filter as a second in-process filter, to perform, through the capacity-expanded second in-process filter, deduplication filtering on transactions to be uploaded to the blockchain.

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Shenzhen, China

Bing Shao