Agile IT Architecture

I presented sometime ago an architecture overview and use case for deploying a Rule Engine inside an Event Driven Architecture. There are papers from analysts and other bloggers on that subject which are predicting that EDA is becoming a hot subject in the next few months. I want to share what I found interesting. Event Driven Architecture is an asynchronous publish-and-subscribe communication pattern: Publisher applications send events to a mediation layer which is notifying the subscribers interested by the events. The publisher is completely unaware of the subscriber. Components are loosely coupled in the sense that they only share the semantic of the message. The simplest Java implementation is based on using JMS Topics as it is a natural API for pub-subscribe messaging. The data carried on the message payload are events with business means. The goal to embrace EDA is to deliver real-time access to business data. This is not really an extension of SOA but a complement of it as publ...

I spent the last four months to dig into Complex Event Processing offerings and especially how BRMS and CEP can work together to support new type of business applications, and to move to agile IT architecture. As stated by Professor David Luckham in his book the ‘Power of events’: future applications need to address the following problems Monitor events at every level of the IT systems Detect complex patterns of events, consisting of events that are widely distributed in time and location of occurrence Trace causal relationship between events in real time. Take appropriate action when patterns of events are detected. Adding CEP engine within our IT architecture will help bring agility as we can define complex patterns of events, hot deploy them, execute them, and improve their scope by time. CEP solution today uses a language close to SQL to define statement which filters, aggregates, joins events, and applies pattern matching on stream of events. Those stateme...