Tencent Technology (shenzhen) Company Limited

Tencent Technology Company Limited

Hailin Lei

Anqun Pan

Liangchun Xiong

Bin Hu

Jing Zhao

Chong Zhu

Haixiang Li

Kang Sun

Sheng Ye

Honghui Wu

Haoqiong Bian

Yongsong Liu

A data migration method includes: obtaining, by a first node, a first route assignment table; receiving, by the first node, a first instruction; obtaining, by the first node by using the first route assignment table, a first partition identity (ID) based on a first primary key ID carried in the first instruction; determining, by the first node, a second node based on the first partition ID; and transmitting, by the first node, first data uniquely identified by the first primary key ID to the second node.

Data migration method and apparatus, device, medium, and computer product

This application discloses request processing methods and apparatuses. The request processing method, performed by a first computing device in a clustered database includes determining a lock synchronization mode of the clustered database in response to a data request; locking a data resource corresponding to the data request when the lock synchronization mode is a weak synchronization mode, and executing the data request; obtaining locking feedback information about the data resource by at least one second computing device in the clustered database when the lock synchronization mode is not the weak synchronization mode, the locking feedback information indicating whether the second computing device has locked the data resource; and locking the data resource corresponding to the data request when the obtained locking feedback information satisfies a target condition corresponding to the lock synchronization mode, and executing the data request.

Request processing methods and apparatuses, computing device and storage medium

A data processing method for an electronic device includes: obtaining data rebalance information representing a new partition plan for a partition table, the partition table being a table for data distribution based on a partition key; creating, for a set specified in the partition plan, a corresponding partition space, and recording, in the corresponding partition space, a current data range of a set corresponding to the partition space, the data range comprising one of a value range of the partition key and a value list of the partition key; updating the data range recorded in the corresponding partition space based on the partition plan, and updating correspondence between the corresponding partition space and sets of the partition table by using the updated data range in the corresponding partition space; and updating data distribution in the sets of the partition table based on the correspondence.

Data processing method and apparatus, electronic device, storage medium, and program product

A transaction execution method, performed by a computing device, includes: determining, in response to a data definition language (DDL) transaction in execution interruption satisfying a resumption condition, a last data block processed by the DDL transaction before the execution interruption; continuing, starting from a next data block following the last data block, executing the DDL transaction; and committing the DDL transaction after data blocks starting from the next data block operated by the DDL transaction are processed.

Transaction execution method, computing device, and storage medium

This application discloses a database transaction processing method performed by a computer device. The method includes: in a case of starting a target transaction, obtaining, by a working node in a distributed database system, a transaction timestamp of the target transaction and current global latest version information, the target transaction including at least one operation statement for a target data object, and the global latest version information being version information of latest generated metadata of metadata stored in the distributed database system; determining latest-version metadata of the target data object according to the current global latest version information, and determining to-be-accessed user data of the target transaction according to the transaction timestamp; and executing an operation statement of the target transaction on the to-be-accessed user data based on the latest-version metadata of the target data object.

Database transaction processing method and apparatus, server, and storage medium

Embodiments of the present disclosure disclose a data processing method, apparatus, and system. The method provided in the embodiments of the present disclosure includes receiving a data processing request sent by a client and obtaining a routing table according to the data processing request. The routing table stores structure information of a relational database. The relational database includes a plurality of sub-databases. The sub-database includes a plurality of partitioned tables, and the partitioned table includes a plurality of shards. The method also includes determining a target sub-database according to the data processing request and the routing table. The method further includes sending the data processing request to the target sub-database, so that the target sub-database performs an operation according to the data processing request.

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Shenzhen, China

Hailin Lei