InfoQ Homepage Messaging Content on InfoQ
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Exploring Event Driven Architectures with Esper
At Java One Thomas Bernhardt and Alexandre Vasseur explained the concepts of event driven application servers and the Esper project. Event driven application servers are a new category of servers, proving a runtime and supporting infrastructure services (transport, security, event journaling, high availability, connectors, etc.) to servers designed to be able to process over 100,000 events/sec.
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Presentation: Event Patterns
Ian Cartwright presents some of his work (developed with Martin Fowler) on Event Patterns (recorded at JAOO), including: Event Sourcing, Event Collaboration, Parallel Model, and Retroactive Event. These patterns can be used in scenarios where a sequence of domain model changes may need to be recorded, reversed, corrected, or simply observed.
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OASIS WS-RM closes
The OASIS WS-RM technical committee has closed. This groups work should not be confused with OASIS WS-RX which is still going forward.
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IONA acquires LogicBlaze, supporters of ActiveMQ and ServiceMix ESB
LogicBlaze, the first venture funded/created by open source VC Simulalabs has been acquired by IONA, who offers the Artix enterprise ESB as well as Celtix, an open source ESB platform. LogicBlaze offered subscription support and training (as well as the development) behind the ActiveMQ project as well as ServiceMix ESB. InfoQ spoke to IONA and others to get the full details.
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JBoss Messaging Matures with Clustering & Transparent Failover Support
A couple of weeks ago JBoss (now part of Red Hat) released JBoss Messaging 1.2, replacing JBossMQ and adding clustering and transparent failover one would expect from a production messaging system. InfoQ spoke to JBoss Messaging Project Lead (Ovidiu Feodorov) and Technical Lead (Tim Fox), to ask them about their latest release as well as their thoughts on JMS & SOA in general.
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WCF Messaging Fundamentals
Aaron Skonnard has published an article about WCF Messaging Fundamentals in the current issue of the MSDN Magazine. He provides an overview of WCF's messaging layer, improvements in the System.Xml namespace as well as guidance on working with messages and message representations.
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biztalk247.com launches
Saravana Kumar, a BizTalk expert, launched biztalk247.com(BETA) on February 14, 2007. BizTalk 24 * 7 aggregates diverse resources regarding BizTalk and related technologies.
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WS-MTOM Policy submitted to W3C
MTOM has quickly become an important component within the Web Services developers arsenal, offering the composability of base64 with the transport efficiency of SOAP with attachments. But unfortunately it wasn't tied into the rest of the Web Services architecture: there was no standard way for services to advertise that they were "MTOM ready". Until today that is.
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FioranoMQ Service Pack 3 released claiming 20% performance improvement
FioranoMQ Service Pack 3 was released today, offering significant performance improvements and increased robustness via improved diagnostics and JMS APIs for server monitoring.
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InfoQ Article: Using SEDA to Ensure Service Availability
SEDA is a new strategy for incorporating event driven architecture for scalability and availability of services in the context of SOA. These strategies are based on queuing research pioneered for the use of highly abailable and scalable services, initially in the Web context, but moving into the SOA and Web services context. This article describes SEDA with an implementation using Mule.
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Distributed Software Development for Java and .NET
TIBCO Enterprise Messaging Service offers cross-platform messaging for Java and .NET developers.
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WebORB - Easily Makes Rails Models Accessible to Flex / Flash
A new Rails plugin, WebORB, ties together the worlds of Ruby on Rails and Adobe's Flex technologies in an easy manner.
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XML Overload: Bad Design or Neccesary Evil?
As discussed in the recent InfoQ News item SOAP Attachment State of the Art, XML files are reaching epic proportions in real world SOA implementations. Is this bad design or a neccesary evil? A recent study by Rogue Wave Software helps clarify.
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Event Driven Architecture
Event Driven Architecture (EDA) is a term promoted by Gartner to describe an evolved state of Enterprise software characterized by real time events. EDA has been associated to its detriment with SOA 2.0, however, there may be technical legitimacy to some of the EDA ideas.
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Esper: High Volume Event Stream Processing and Correlation in Java
Esper is an event stream processing (ESP) and event correlation engine (CEP) unveiled this week with a 1.0 launch on Codehaus. Esper is a real time engine that triggers actions when pojo event conditions occurs among event streams. It is designed for high volume event correlation where millions of events coming in would make it impossible to use a classical RDBMS approach.