Tag Archives: Steve Martin

Oslo, M and Quadrant – PDC20008

Steve Martin has blogged about the upcoming Oslo CTP to be released at PDC (just 17 days to go).

Here’s the breakdown (straight from his blog):

In less than three weeks, the those attending the PDC will get a first-hand look at the three technologies that make up Oslo:

  • A language – codenamed “M” – that helps people create and use textual domain-specific languages (DSLs) and data models
  • A relational repository – that makes models available to both tools and platform components
  • A tool – codenamed “Quadrant” – that helps people define and interact with models in a rich and visual manner
  • Now, in case those two codenames sound new; they are.  While we’ve talked about both the tool and the language before, today is the first time we’ve publicly referred to them by their codenames: “Quadrant” and “M” which you’ll see reflected in the CTP packaging.

Note, the language – codenamed ‘M’ – is probably what was previously referred to as ‘D’ by some (we referred to it here).

Mary-Jo has a good summary also.

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Understanding Dublin

Sites were awash with Dublin news today. But what is it really?

To understand Dublin you can start with Steve Martin’s post announcing the new technology, which will be (of course) covered in detail at PDC later this month. Steve’s team heads up the WCF and WF parts of the .NET Framework so he’s in a good position to explain the new Dublin codename.

In a nutshell: Dublin is about letting the next versions of WCF and WF based apps scale better whilst providing easier deployment and management functionality.

How exactly this is enabled is difficult to get a grip on from Steve, which is why we need to head over to the new Dublin site on Microsoft. Here we learn that Dublin is a server (or as Mary-Jo writes, a new distributed application server).

Actually, it’s not exactly a server, rather a ‘set of enhanced Windows Server capabilities.’ that ‘.extend Internet Information Server (IIS) to provide a standard host for applications that use workflow or communications’ (from the Microsoft Dublin site). Stephen Forte probably has the good summary we came across.

It’s getting a little clearer now, but we’re still a little unsure. Thankfully a nice little table in this Dublin Overview document provides a nice little table:

Windows Communication Foundation 4.0 Windows Workflow Foundation 4.0 Windows Server "Dublin" technologies

RESTful enhancements

  • Simplifying the building of REST Singleton & Collection Services, ATOM Feed and Publishing Protocol Services, and HTTP Plain XML Services using WCF
  • WCF REST Starter Kit to be released on Codeplex to get early feedback
  • Messaging enhancements
  • Transports – UDP, MQ, Local in-process
  • Protocols – SOAP over UDP, WS-Discovery, WS-BusinessActivity, WS-I BP 1.2
  • Duplex durable messaging

Correlation enhancements

  • Content and context driven, One-way support

Declarative Workflow Services

  • Seamless integration between WF and WCF and unified XAML model
  • Build entire application in XAML, from presentation to data to services to workflow

Significant improvements in performance and scalability

  • Ten-fold improvement in performance
  • New workflow flow-control models and pre-built activities
  • Flowcharts, rules
  • Expanded built-in activities – PowerShell, database, messaging, etc.

Enhancements in workflow modeling

  • Persistence control, transaction flow, compensation support, data binding and scoping
  • Rules composable and seamlessly integrated with workflow engine

Updated visual designer

  • Easier to use by end-users
  • Easier to rehost by ISVs
  • Ability to debug XAML

Provide standard host for WF and WCF applications

Pre-built developer services

  • Message-based correlation
  • Message forwarding service
  • Content-based message routing
  • Compensation service for long-running transactions

Greater scalability and easier manageability

  • Enable scale-out of stateful workflow applications
  • Persisting and rehydrating state for high scalability
  • Enhanced management and monitoring functions
  • Tracking store for workflow events

Supports “Oslo” modeling platform

Dublin will be packaged up and made available as a download for Windows Server customers, and of course included in future Windows Server releases.

The keen eyed amongst you will notice that Oslo rears its head (see Tuesday’s post for details on that front) and if you read through the doc you’ll learn that Dublin will be the first server product ot deliver support for Oslo.

But there’s others of course – further in the doc it notes that they’ll be directly supporting BizTalk and Dublin working nicely together.

Other items: Dublin will be backwards compatible and support existing .NET 3.5 WCF and WF applications.

Microsoft are touting Dynamics AX and CRM as the first products slated to support Dublin.