Alibaba Group Holding Limited

Yu Dong

Li Zhang

Jie Zhang

Ruiping Li

Fang Zheng

Congnan Luo

Chaoqun Zhan

Zhe Chen

Ji Jiannan

Dongcan Cui

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.

Method and system for storing query plans in a cache and method for querying a database system

Growing community of inventors

Sunnyvale, CA, United States of America

Yu Dong