IMPLEMENTING OPEN SOURCE TILE CACHING IN A LARGE SCALE US ARMY PROJECT
We will present a study evaluating the feasibility of integrating open source tile caching into Army Mapper, the U.S. Army’s enterprise GIS supporting the overall management and resourcing of Army installations worldwide. The scope and scale of Army Mapper, combined with its need for flexibility and support of dynamic data, provides a unique challenge for open source technology. Army Mapper is running a MapFish and MapServer web front-end with data maintained in Oracle and ESRI ArcSDE. Army installation data is loaded into Army Mapper where it is processed and migrated to a central warehouse accessed through the web. Our goal is to provide high performance and scalability for large amounts of spatial data as Army Mapper usage continues to grow. We will compare TileCache and GeoWebCache and explain why we chose TileCache for this study. We will discuss the positive and negative aspects of adding tile caching and the unique requirements of our implementation. We will present the results of our performance testing simulating different load and usage patterns. Finally, we will discuss our conclusions and recommendations on the feasibility of adding tile caching to Army Mapper.
Kristofor Carle - Syncadd Systems Inc.
James Shute - Syncadd Systems Inc.