Patents by Inventor Liangchang Zhu

Liangchang Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR DATA PROCESSING, COMPUTING DEVICE, AND STORAGE MEDIUM
    Publication number: 20230306031
    Abstract: A method is provided. The method comprises obtaining a first data stream; querying a query table to seek for storage information of a second data stream corresponding to the first data stream in a database, wherein a plurality of second data streams are stored in the database, one or more valid second data streams are included in the plurality of second data streams, and storage information of each of the one or more valid second data streams in the database is included in the query table; and in response to having found in the query table the storage information of the second data stream corresponding to the first data stream in the database, determining, in the database, the second data stream to be spliced with the first data stream based on the storage information of the second data stream.
    Type: Application
    Filed: December 8, 2021
    Publication date: September 28, 2023
    Applicant: BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY CO., LTD.
    Inventors: Yongsheng TIAN, Ting Wang, Ran Shi, Liangchang Zhu
  • Method and apparatus for file compaction in key-value store system
    Patent number: 11232073
    Abstract: Example methods and apparatuses for file compaction in a key-value store system relating to the field of data processing technologies are described. One example method for file compaction in a key-value store (KV-Store) system includes compacting, according to a to-be-deleted log (Delete Log) that corresponds to a to-be-compacted sorted string table (SSTable), the to-be-compacted SSTable to generate a new SSTable. A key corresponding to a non-latest value in the KV-Store system and stored in the to-be-compacted SSTable is recorded in the Delete Log, and the new SSTable does not include a key-value pair that corresponds to the key in Delete Log. The to-be-compacted SSTable is then deleted.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 25, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shimin Chen, Liangchang Zhu, Jun Zhang
  • METHOD AND APPARATUS FOR FILE COMPACTION IN KEY-VALUE STORE SYSTEM
    Publication number: 20180150472
    Abstract: Example methods and apparatuses for file compaction in a key-value store system relating to the field of data processing technologies are described. One example method for file compaction in a key-value store (KV-Store) system includes compacting, according to a to-be-deleted log (Delete Log) that corresponds to a to-be-compacted sorted string table (SSTable), the to-be-compacted SSTable to generate a new SSTable. A key corresponding to a non-latest value in the KV-Store system and stored in the to-be-compacted SSTable is recorded in the Delete Log, and the new SSTable does not include a key-value pair that corresponds to the key in Delete Log. The to-be-compacted SSTable is then deleted.
    Type: Application
    Filed: January 24, 2018
    Publication date: May 31, 2018
    Inventors: Shimin Chen, Liangchang Zhu, Jun Zhang