Patents by Inventor Ji JIANNAN

Ji JIANNAN 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 and system for storing query plans in a cache and method for querying a database system
    Patent number: 11954105
    Abstract: Methods and computer systems for storing a query plan in a cache are provided. The method can include: determining a use frequency of the query plan; determining a target storage layer for storing the query plan based on the determined use frequency, wherein the cache includes at least two storage layers and each of the storage layers is associated with a compression level of query plans; processing the query plan according to the compression level of the target storage layer; and storing the processed query plan in the target storage layer.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 9, 2024
    Assignee: Alibaba Group Holding Limited
    Inventors: Fang Zheng, Zhe Chen, Ruiping Li, Congnan Luo, Yu Dong, Jie Zhang, Li Zhang, Ji Jiannan, Dongcan Cui, Chaoqun Zhan
  • METHOD AND SYSTEM FOR STORING QUERY PLANS
    Publication number: 20220114179
    Abstract: The methods and computer systems for storing a query plan in a cache. The method can include: determining a use frequency of the query plan; determining a target storage layer for storing the query plan based on the determined use frequency, wherein the cache includes at least two storage layers and each of the storage layers is associated with a compression level of query plans; processing the query plan according to the compression level of the target storage layer; and storing the processed query plan in the target storage layer.
    Type: Application
    Filed: January 30, 2019
    Publication date: April 14, 2022
    Inventors: Fang ZHENG, Zhe CHEN, Ruiping LI, Congnan LUO, Yu DONG, Jie ZHANG, Li ZHANG, Ji JIANNAN, Dongcan CUI, Chaoqun ZHAN