Alibaba Group Holding Limited
METHOD AND SYSTEM FOR STORING QUERY PLANS

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.