Replication strategies for UDDI registries

• Main Author: Sun, Chenliang, 1969-
• Format: Others
• Language: en
• Published: McGill University 2005
• Subjects: Computer Science.
• Online Access: http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98808

UDDI registries are intended to become the world-wide lookup mechanism for web services. As such, they have to provide low response time, high throughput, high availability, and access to accurate data. Data replication is a key technology to satisfy such requirements. However, replication requires proper coordination of updates. Various replication strategies favor different subsets of the performance metrics. In this thesis, we have a closer look at two different replication strategies. One follows the UDDI specification; the other uses a middleware-based replication tool. We have integrated both approaches into an existing UDDI registry in a modular way. The thesis provides a detailed comparison of these two strategies from different points of view. Performance is analyzed by the means of an analytical model evaluating the communication and database access overhead, and by performing experiments in both LAN and WAN environment. Implementation overhead, including modularity and reusability, is also analyzed. Furthermore, some core design issues, such as reliability, extensibility, etc., are discussed.