Asynchronous request queue model oriented to map visualization tile service

Abstract

The invention provides an asynchronous request queue model oriented to the map visualization tile service and belongs to the fields of computer network technology and queue control technology. By means of the principles and methods of the Queuing Theory, the asynchronous request queue model mainly solves the access problem of the visualization tile service of networked maps and achieves hierarchical, real-time and smooth map tile access of a client. The asynchronous request queue model oriented to the map visualization tile service is implemented through the following steps including, firstly, setting a request queue with a fixed capacity; when a new request comes, determining whether to put the new request into the queue or discard the request according to the state and the priority of the queue; besides, establishing threads identical to concurrent requests in quantity, performing a tile obtaining process and returning results in a call-back mode. The asynchronous request queue model oriented to the map visualization tile service relates to the technologies such as priority control, concurrent request quantity control, network asynchronous request and request queue management under high-frequency visualization requests, thereby being a high-frequency and high-timeliness network asynchronous request queue model with the priority control and being applicable to access of the map visualization tile network service.

Description

technical field [0001] The present invention relates to computer network technology and queue control technology, in particular to priority control under high-frequency visualization requests, concurrent request volume control, network asynchronous request, request queue management and other technologies. The invention is a high-frequency and high-time-effective network asynchronous request queue model with priority control, which is suitable for map visualization tile network service access. Background technique [0002] Map visualization tile client requests have the requirements of high request frequency, high timeliness, and strict priority conditions. As the user continues to switch views, tile requests frequently occur in the background; the tiles in the center of the current view are always requested with the highest priority; at the same time, the tiles on the periphery and adjacent levels of the view are requested with different priority weights. It includes asynch...

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Problems solved by technology

[0005] The asynchronous request queue model for map visualization tile service access combines the asynchronous network request technology and the queuing method of priority control, which specifically involves technical issues such as map tile priority control, concurrent request volume control, and request queue management. , so far, it can be seen that there are no more systematic solutions in the literature / patents

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