InfoQ Homepage Architecture & Design Content on InfoQ
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SAP NetWeaver Process Integration v7.1: a new architecture and enhanced SOA capabilities
SAP is ramping up for the launch of its latest version of the SAP NetWeaver Process Integration platform. Product Manager Sindhu Gangadharan said SAP NWPI v7.1 will be available next month. In an interview with Paul Read, she details the platform’s new capabilities.
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Limitations of Closures in Visual Basic
In part 6 of his series on closures, Jared Parsons takes about some of the limitations of closures in Visual Basic. While it is not explicitly called out, many of these limitations may also apply to C#.
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Review: Continous Performance Management
Steven Haines from Quest has published an article demonstrating the use of performance analysis tools in the continuous build cycle as best practice and makes some thought provoking points about the cost of not doing so.
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Presentation: Amazon CTO Werner Vogels on Availability and Consistency
When we move to distributed architectures for scalability and/or fault-tolerance reasons we are also introducing additional complexities. Amazon CTO Werner Vogels dives into the different parameters that play in the tension between availability and consistency and presents a generalized model that we can use to reason about the trade-offs between different solutions.
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How Big Should A Service Be?
A recent Zapthink report discusses the granularity of services and how atomicity or composibility factor into the design. The result is a matrix that shows the potential trade-offs to be made when developing your services.
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Google Singleton Detector
Google has released a tool that performs bytecode analysis in order to locate and report on Singletons within bytecode. Although the tool has limitations, it is one way to detect a pattern that many see as controversial.
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Presentation: Gregor Hohpe on Conversations Between Loosely Coupled Services
In this presentation, Google architect Gregor Hohpe introduces various concepts for to manage more complex interactions between services, including conversations, choreography, and orchestration. He provides a down-to-earth look at these concepts along with the associated Web services standards like WS-BPEL and WS-CDL, and identifies common patterns in service conversation.
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DSLs bringing the end of single language development?
For many years, mainstream practice in enterprise software development has been to standardize on a single general purpose language on software projects, with Java and C# today being the mainstream choices. With the rise of interest in DSLs, we may be entering into a phase in which multiple languages on software projects becomes the norm, but not with the same problems of the 80's and early 90's.
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ObjectMother - a Forgotten Testing Tool
One of the earliest techniques for writing tests using TDD did not use mocks and stubs, but used the actual business objects instead. By creating a set of factories that instantiated, composed, and executed methods on business objects, real objects, in a non-initial-state of their lifecycle, could be created for testing purposes. The name coined for this pattern was ObjectMother.
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Are Mashups EAI 2.0?
Mashups are a lightweight, agile approach to application integration that utilize the protocols and standards of the web. Gregor Hohpe explores the use of Mashups and asks the question - Are Mashups EAI 2.0?
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Digging Deeper Into JBoss MetaMatrix
JBoss' Sacha Labourey has provided a detailed description of development uses of the MetaMatrix technology JBoss acquired in April.
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Gemstone OODB to support JRuby, Rubinius
Gemstone is working on Ruby support for their Object Database products, starting off with JRuby. We talked to Alan McKean from Gemstone about what's to come, technical details and Gemstone's plans with Rubinius.
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Tibco releases PageBus - Ajax publish/subscribe component
A few days ago Tibco announced the availability of PageBus, which is a framework to allow publish/subscribe between Ajax components on the browser side. Furthermore Tibco made PageBus an open source project under the BSD license. PageBus provides an important component for building mashups in RIAs in a more flexible, loosely coupled way.
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Presentation: System Integration Testing with Spring
Spring provides a holistic solution that makes your application's use cases and subsystems easier to test. The emphasis is on testing outside a JEE server or container, thus greatly improving productivity. In this presentation, Spring Creator Rod Johnson discusses integration testing and the support that Spring provides for it.
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New patterns and middleware architecture needed for true linear scalability?
Nati Shalom says existing tier-based middleware cannot for true linear scalablility. Instead he proposes a new middleware stack based on self-sufficient processing units that supports a partitioned/scale-out model. Pat Helland at Microsoft some years ago proposed some new transactional patterns and formalizations to be used in what he calls almost-infinite scalable systems.