Data query method and device based on multi-level cache

Abstract

The invention discloses a data query method and device based on a multi-level cache, and relates to the technical field of computers. A specific embodiment of the method comprises the steps of receiving an inventory query request; judging whether inventory state data corresponding to the inventory query request exists in a cache or not; the cache comprising a first cache, a second cache and a third cache; wherein the first cache caches inventory state data of a preset calling party, and the second cache caches inventory state data of goods without goods, the third cache caches inventory state data of the hot objects; if yes, taking the inventory state data as result data; and otherwise, acquiring basic data corresponding to the inventory query request from a database, determining the inventory state data according to the basic data, and taking the inventory state data as result data. According to the embodiment, under the condition of high-concurrency and large-flow access, the single-machine throughput and the system concurrency capability can be improved, stability and reliability are achieved, the user experience is improved, and cost is saved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a multi-level cache-based data query and device. Background technique [0002] In the case of high-concurrency and high-traffic access, the system may have long response time or even short-term unavailability, which affects user experience. Existing technologies generally deal with this deficiency through hardware expansion, distribution or hierarchical caching, etc., but these methods have problems such as high cost, poor stability, single-machine throughput and weak system concurrency under the condition of high concurrent and large traffic access. Contents of the invention [0003] In view of this, the embodiment of the present invention provides a data query method and device based on multi-level cache, which can improve the throughput of a single machine and the concurrency capability of the system in the case of high-concurrency and large-traffic access, and is stable a...

AI Technical Summary

Problems solved by technology

[0002] In the case of high-concurrency and high-traffic access, the system may have a long response time or even be unavailable for a short time, affecting user experience

Existing technologies generally deal with this deficiency through hardware expansion, distribution or hierarchical caching, etc., but these methods have problems such as high cost, poor stability, single-machine throughput and weak system concurrency under the condition of high concurrent and large traffic access

Images