Method and device for caching map tiles

Abstract

The present invention discloses a map tile caching method and apparatus. The method comprises: receiving a map request instruction sent from a client, and determining a corresponding map tile according to the map request instruction; determining a storage node of the map tile according to a level and row / column number information of the map tile; determining whether the level of the map tile is less than a set threshold; if yes, storing the map tile into a first region of the storage node; and if not, storing the map tile into a second region of the storage node, and managing data in a subsequent process according to a set period. According to the method provided by the present invention, different memory management policies are applied to different regions, and map tiles in frequently accessed regions are cached all the time, thereby avoiding frequent exchange and in / out of map tiles, and improving processing performance of a system.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a method and device for caching map tiles. Background technique [0002] The so-called map caching technology is to cut the pre-generated map into map tiles (map slices) of certain specifications according to certain mathematical rules, and save them to the map server. When users access the map service through the client, the server directly Returns the corresponding map tile cache data without real-time rendering. Therefore, map caching technology is an effective way to achieve fast access and concurrent access to map services. Through map caching technology, the server can return pre-generated map tiles according to user requests, thereby reducing the burden on the server, speeding up the display of maps and improving maps. Browsing speed purposes. [0003] At present, the map caching technology is mainly based on the local memory of the server for map caching, and adopt...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for caching map tiles, which are used to solve the problem of frequent swapping in and out of the tile cache when the FIFO strategy is used to manage the map tiles in the memory in the prior art, resulting in increased memory burden, The overall degradation of service performance

Images