Sessions at Software Architect 2011 about Design Patterns on Thursday 20th October

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  • Parallel patterns

    by Andrew Clymer

    Herb Sutter famously coined the phrase “the free lunch is over” back in 2005, when it became clear that processor clock speeds were no longer obeying Moore’s law. If developers wanted applications to go faster they could no longer rely on greater clock speeds, they would need to think differently and restructure their code to take advantage of multiple cores in order to get better and better performance. It turns out parallelising all but the most trivial piece of code is challenging. .NET 4 attempts to assist the developer by providing support in the framework to assist parallelising algorithms through the use of parallel constructs like Parallel.For, and Parallel LINQ and a variety of concurrent data structures. The framework vendors would like you to believe that the free lunch is now back, but whilst they can deliver a moderate free lunch, if you truly want a gut-busting free lunch you will have to deploy a range of tricks for your algorithm to take full advantage of those multiple cores.

    At 9:30am to 11:00am, Thursday 20th October

  • Entity Framework and the repository pattern

    by Andrew Clymer

    .NET 4 comes with a version of Entity Framework that is fit for purpose. Entity Framework is Microsoft’s ORM, their version of NHibernate. Entity Framework version 1 forced developers to be tightly coupled to Entity Framework, this goes against traditional ORM technology and creates problems for unit testing. Entity Framework 4 fixes this problem via POCO support. However it is still up to developers to work out how to utilise the technology to truly loosely couple application logic from business logic. This talk will take you through these new features and show how the repository pattern can be deployed with Entity Framework to provide a testable and loosely coupled solution.

    At 4:00pm to 5:30pm, Thursday 20th October