Hybrid cloud search engine and search method based on dynamic cache mechanism

The invention relates to a hybrid cloud search engine and search method based on a dynamic cache mechanism, and the search engine comprises: a target object search module, which is used for receiving search description and converting the search description into a search identifier, and a local cache module and a local storage module which are used for searching on private cloud according to the search identifier, and a public cloud cache module and a public cloud storage module which are used for searching on the public cloud according to the search identifier; the search method comprises the steps that according to search description of a user, a search engine firstly matches whether information requested by the user exists on the local cache module and the local storage module, if not, matching is conducted through the public cloud cache module and the public cloud storage module, and efficient return of common search targets is achieved. The search efficiency is efficiently improved by adopting a cache mec