Information Technology Reference
In-Depth Information
7
Assembling Cloud-Based Geographic
Information Systems: A Pragmatic Approach
Using Off-t
he-Shelf Components
Muhammad Akmal, Ian Allison, and Horacio González-Vélez
CONTENTS
Summary .............................................................................................................. 141
7.1 Introduction ................................................................................................ 142
7.2 Background ................................................................................................. 143
7.3 Methodology .............................................................................................. 145
7.4 Implementation .......................................................................................... 149
7.4.1 Scaling and Fault Tolerance .......................................................... 152
7.5 Evaluation ................................................................................................... 154
7.5.1 Performance Testing ...................................................................... 155
7.5.2 Processing Time ............................................................................. 156
7.6 Conclusion and Future Work ................................................................... 157
Glossary ................................................................................................................ 158
Acknowledgments .............................................................................................. 159
References ............................................................................................................. 159
Summary
In this chapter, we present a novel systematic way of building a web-based
geographic information system (GIS) running on cloud services. The
proposed architecture aims to provide a design pattern for building a
cloud-based GIS using simple and readily available low-cost tools with great
overall system efficiency. The result of running the GIS using this para-
digm is arguably reliable and available at low cost and with some platform
independence. It has required significantly less time and effort to deploy
when compared with standard cloud development. We present a case study
based on road accidents using Microsoft Windows Azure and Amazon Web
Services. In this case study, a GIS was created that helped in improvements
of road conditions by identifying road accident hot spots in real time and
141
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