Search system index switching method and search system

Abstract

The invention opens an index switching method in search system. The searching servers reserves main directories and backup directories, main memory space and backup memory space to load index information. Search servers perform searching according to the index in main directories and memory space. In the index switching, the new index information produced by search servers are stored in backup directories as well as backup memory space. Then exchange data between main directories and backup directories; exchange data between main memory and backup memory. The invention also opens a searching system based on described method, which including index server, transit server and search server.

Description

technical field [0001] The invention relates to network search service technology, in particular to a search system index switching method and a search system. Background technique [0002] The current network search service technology has been applied in many aspects, for example, in the full-text retrieval system of electronic commerce. FIG. 1 is a schematic structural diagram of an existing search system. Referring to Fig. 1, the search system includes: an index server, a search server and a transfer server. [0003] The index server includes an index information generation unit of the search engine, which is used to generate index information for search services, namely: index, memory index table and attribute filter table, and provide these data to the search server. The index refers to: all relevant data provided for a specific application for document retrieval, where the document is the original data used by the index server for indexing; the attribute filter table...

AI Technical Summary

Problems solved by technology

[0007] In the index switching technology of the existing search server, it is necessary to switch the index data, the attribute filter table and the memory index table at the same time, in order to ensure that the index of the search server is consistent with the data in the attribute filter table and the memory index table during the index switching process , when updating the index, attribute filter table and memory index table, it is necessary to lock the index information to prevent the search server from searching for data inconsistent with the current attribute filter table and memory index table, but the search server Cannot access index information, so search service is not available when index is switched

In this technical solution, when the index information is large, the index switching time will be very long, which seriously affects the work of the search server, causing the search server to be unable to perform search services for a long time, reducing the quality of search services

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