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Todays Featured Content:

F5 Boasts Industry's First On-Demand Application Delivery Controller, Redefining Performance and Scalability with the Introduction of VIPRION

New F5 bladed chassis enables large enterprises and service providers to easily manage a complete application-fluent infrastructure; VIPRION gives customers control over management, power, space, and operating expenses

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The Role of the Adaptive Network in Service-Oriented Architectures

For networkers to successfully deliver applications, it is not just a matter of adding more capacity or connectivity. A higher degree of automation, integration, and architectural design is required, with network-based intelligence as the foundation.

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SOA Success Depends On a SON

Jeff Browning, director of product management for F5 Networks, looks at how network technology has evolved to better support service oriented architectures, and why incorporating a service oriented network is critical for SOA success.

Full story from www.f5.com
F5 Commands Worldwide Market Share Lead for Application Delivery Controllers

Leading industry analyst firm places F5 at the market share forefront of ADC vendors

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Taming Your Flock of NAS Devices

NAS devices are easily deployed but capacity limited, leading to an administratively unmanageable number of NAS devices as mount/share points multiply. This administrative quagmire is further complicated with a multi-vendor NAS data center where cross-vendor functionality is often lacking.

Full story from www.virtual-strategy.com
Featured Content provided by F5 Networks

Last Call: Web Services Description Language (WSDL) 2.0

Tuesday 27 March 2007

The Web Services Description Working Group released three Last Call Working Drafts for the Web Services Description Language (WSDL) Version 2.0: Part 0: Primer , Part 1: Core Language and Part 2: Adjuncts .

Comments are welcome through 15 April on this brief Last Call for changes since Candidate Recommendation review. WSDL RDF Mapping and SOAP 1.1 Binding are updated Working Drafts. WSDL 2.0 models and describes modular Web services and is used to document distributed systems and to automate communication between applications.

WSDL 2.0 describes a Web service in two fundamental stages: one abstract and one concrete. Within each stage, the description uses a number of constructs to promote reusability of the description and to separate independent design concerns.

At an abstract level, WSDL 2.0 describes a Web service in terms of the messages it sends and receives; messages are described independent of a specific wire format using a type system, typically XML Schema.

An operation associates a message exchange pattern with one or more messages. A message exchange pattern identifies the sequence and cardinality of messages sent and/or received as well as who they are logically sent to and/or received from. An interface groups together operations without any commitment to transport or wire format.

At a concrete level, a binding specifies transport and wire format details for one or more interfaces. An endpoint associates a network address with a binding. And finally, a service groups together endpoints that implement a common interface.