Huawei Cloud Computing Technologies Co., Ltd.

Zongquan Zhang

Xiaoqin Xie

Wenlong Ma

Ran Xu

Jingqi Mao

A method for controlling a database transaction, includes: receiving a structured query language (SQL) statement from a user equipment; setting a first speculation function of a first database transaction based on the SQL statement, where the first speculation function indicates that before a log of a second database transaction is committed, an operation record of the second database transaction is visible to the first database transaction; and performing an operation on the first database transaction based on the first speculation function.

Method and apparatus for controlling database transaction, and related device

In a shard adjustment method for a time series database, feature information of an access request of at least one user for a data table of a time series database is obtained. The data table is divided into a plurality of shard groups according to a predetermined rule, and each shard group can be further divided into a plurality of shards. Each shard group is set in a different time period, and each shard is set in a different node. Then, the predetermined rule is adjusted based on the feature information, and a new shard group and/or a new shard that match/matches the access habit are/is generated according to an adjusted rule.

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Gui'an, China

Zongquan Zhang