Web GIS Architecture Based on JNLP & some Performance Improving Techniques
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 7
Abstract
WebGIS (also known as web‐based GIS and Internet GIS) denotes a type of Geographic Information System (GIS), whose client is implemented in a Web browser. By analyzing the defects of two tier and three tier client/server Web GIS architecture, this paper presents four tier client/server Web GIS architecture based on JNLP. This kind of Web GIS architecture can solve the problem of client side software publish and maintenance, and improve efficiency of Web GIS. WebGIS have been developed and used extensively in real‐world applications. However, when such a complex web‐based system involves the dissemination of large volumes of data and/or massive user interactions, its performance can become an issue. This paper also presents several major potential performance problems with WebGIS and several possible techniques to improve the performance. These techniques include the use of pyramids and hash indices on the server side to handle large images. To resolve server‐side conflicts originating from concurrent massive access and user interactions, we suggest clustering and multithreading techniques. Multithreading is also used to break down the long sequential, layer‐based data access to concurrent data access on the client side. Caching is suggested as a means to enhance concurrent data access for the same datasets on both the server and the client sides.
Authors and Affiliations
Barkha Narang, Meeshika Arora
Keywords
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