Alibaba Group Holding Limited

Beijing Oceanbase Technology Co., Ltd.

Ant Financial (hang Zhou) Network Technology Co., Ltd.

Hu Xu

Yuzhong Zhao

Chenxi Li

Zhenkun Yang

Min Yang

Zhidong Sun

The present specification discloses a database migration method, including: copying metadata from a first server of a database, the metadata including identification information of synthetic data; receiving a service instruction sent by a client after the copying the metadata from the first server of the database; determining, based on the service instruction, whether the synthetic data needs to be retrieved from the first server of the database; and in response to it is determined that the synthetic data needs to be retrieved from the first server of the database, copying the synthetic data from the first server of the database based on the identification information of the synthetic data. According to the present disclosure, the service instruction sent by the client is received in advance, and the synthetic data is copied from the first server of the database based on the identification information of the synthetic data, thereby reducing time taken for database migration.

Database migration method, apparatus, device, and computer-readable medium

Implementations of the present application provide a partition splitting method. Data files in a target source partition are divided into at least two data groups. A first data group from the at least two data groups is selected as a target splitting data group. A first splitting step is performed on the target splitting data group, including: splitting the target splitting data group into a plurality of data sub-groups based on a predetermined splitting rule, wherein each data sub-group of the plurality of data sub-groups corresponds to a new partition of at least two new partitions for the target source partition, and assigning each data sub-group to the new partition corresponding to the data sub-group. A second data group from the at least two data groups is selected as the target splitting data group, wherein the second data group is different from the first data group.

Partition splitting method and apparatus, electronic device, and readable storage medium

One embodiment of the present invention provides a system for facilitating dynamic load-based merging. During operation, the system identifies incremental data in memory of a first computing device. The incremental data comprises update to reference data in a storage device in a second computing device. If the size of the incremental data becomes greater than a threshold, the system selects a first server group from a plurality of server groups. The second computing device belongs to this first server group. The system then migrates data access requests from the first server group to other server groups in the plurality of server groups and merges the incremental data from the memory of the first computing device to the storage device in the second computing device. The merging includes batch sequential disk writes to the storage device of the second computing device.

Dynamic load-based merging

Growing community of inventors

Hangzhou, China

Hu Xu