Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2017
Student: MURAT AKKAN
Supervisor: HACER KARACAN
Open Archive Collection: AVESIS Open Access Collection
Abstract:In this study, a client server architecture of Open Geospatial Consortium (OGC) service was proposed for heavy traffic networks in order to provide efficient network usage and high availability concerns. With the proposed architecture, it was aimed to achieve an average response time of less than 2 seconds. For this purpose, performance improvements were made in spatial data format, data structure, OGC service and server mechanism. Grid tile pyramid data structure was implemented for the usage of the data in accordance with OGC services. With usage of spatial quad key, a hierarchy was established between tiles for efficient use of this complex data. WMS (Web Map Service) and WMTS (Web Map Tile Service) services were compared for displaying the desired data and efficient WFS (Web Feature Service) output format were selected. The tile cache server was used to minimize repetitive operations on the server with the selection of WMTS service and 50% improvement in cache ratio with automatic seeding. Load balancing and auto-scaling components were implemented on 3-tier architecure to gain scalability. As a result of the measurements, the proposed architecture responded to 92% of the queries in less than 2 seconds and was 100% accessible in 24-hour stress test.