Building a Content-Based Event Brokering Service Using XML Repositories and Publish/Subscribe Communication Scheme

Abstract

Event brokering service has demonstrated its usefulness in Internet. Constructing a scalable event brokering system which operates on Internet and provides accurate filtering mechanism is challenging. In this paper, we apply a publish/subscribe asynchronous communication model and XML technology to construct a content-based event brokering system with an XML Storage System. The system provides a good solution to event matching, notification, and transmission services on Internet. With the system, the information publishers can easily spread information via a convenient user interface without programming, and end users can subscribe events of interest and obtain accurate contents easily. We take advantages of the content-based publish/subscribe communication model and Push technology to construct the event brokering system. By using XML as the event messages format to encapsulate any types of the message contents as an XML object, we achieve the flexibility of content definition, self-contained data description, and high portability. In addition, our system uses the XML Document Storage (XDS) system as the message exchange center to provide effective management for persistent event messages.