Metric-Driven Load Balancing System in WMS on Distributed Computing Platform

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Data Management
Format: PDF
In current system Web Map Service (WMS) provides spatial information to Internet users by map images. Commonly, spatial data are stored as vector data. It is a long time job to calculate the density of pixels before distribution and create map images from vector data. To reduce the time and cost, the authors employ Linux cluster. When a map is requested, coordinates scope that is a rectangle defined with xmin, ymin, xmax, ymax must be specified. They design a load balance algorithm to divide the request rectangles into some sub-rectangles. Each sub rectangle is send to a WMS node to produce some sub-maps.
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