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  • Blog Post: EF5 Performance Considerations

    Over the past few weeks the EF team has been putting together a whitepaper that talks about the performance considerations developers should take when using Entity Framework. Performance is one critical aspect of developing modern applications, and this document will help developers make informed design...
  • Blog Post: Sneak Preview: Entity Framework 5.0 Performance Improvements

    An O/RM, like any layer of abstraction, introduces overhead to data access. In EF 5.0 we have taken steps to reduce this overhead and improve performance. As a result in one of our tests, repeat execution time of the same LINQ query has been reduced by around 6x. We also have an end-to-end application...
  • Blog Post: Generated SQL Improvements for TPT Queries (June CTP)

      The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF.   Last year we wrote about some performance considerations when using TPT inheritance in the Entity Framework .  We are pleased to announce that with the...
  • Blog Post: Entity Framework Improvements in Visual Studio 2010 SP1

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. Today’s release of Visual Studio 2010 SP1 includes several performance and stability improvements for Entity Framework 4.0.  MSDN subscribers can download the service...
  • Blog Post: Managing Connections with SQL Azure and Entity Framework

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. For using EF with SQL Azure see http://msdn.com/data/jj556244 The Windows Server AppFabric Customer Advisory Team recently put together some great guidance on managing connections...
  • Blog Post: Connecting to SQL Azure using Entity Framework

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. For using EF with SQL Azure see http://msdn.com/data/jj556244 The Entity Framework provides a very powerful way to access data stored in the cloud, particularly in SQL Azure...
  • Blog Post: Inheritance Mapping: A Walkthrough Guide for Beginners

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. For TPT Inheritance see http://msdn.com/data/jj618293 For TPH Inheritance see http://msdn.com/data/jj618292 Entity Framework’s Inheritance...
  • Blog Post: Data Access Guidance

    When considering how your application will connect to a data source, there’s a variety of technologies, patterns, and architectures to consider. Recently we published a “ Summary of Data Access Guidance ” on the MSDN Data Developer Center. If you want to drill deeper into the material...
  • Blog Post: Performance Considerations when using TPT (Table per Type) Inheritance in the Entity Framework

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. For Performance Considerations see http://msdn.com/data/hh949853 The Entity Framework offers very rich inheritance mapping schemes for building...
  • Blog Post: Performance Impact of Server-side Generated GUIDs in EF

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. For Performance Considerations see http://msdn.com/data/hh949853 Background EF4 supports the use of server-generated GUIDs, which has been a popular request...
  • Blog Post: TechEd North America – Sessions Online Now!

    If you missed out on all the festivities at TechEd North America in New Orleans last week, be sure to check out www.msteched.com and catch the talks online. All week long there was a ton of excitement about the new features in Entity Framework 4.0 and WCF Data Services/OData and lots of great questions...
  • Blog Post: Improvements to Generated SQL in .NET 4.0

    The information in this post is out of date. Visit msdn.com/data/ef for the latest information on current and past releases of EF. In a previous post ( http://blogs.msdn.com/adonet/archive/2009/08/05/improvements-to-the-generated-sql-in-net-4-0-beta1.aspx ), we talked about the improvements...
  • Blog Post: ADO.NET Entity Framework Performance Comparison

    There have been a few questions from the last performance blog post about how the Entity Framework compares against other object relational mapping frameworks. The simplest way to compare the performance of Entity Framework with various competing products is to use query performance against SqlClient...
  • Blog Post: Exploring the Performance of the ADO.NET Entity Framework – Part 2

    Query Performance During this post I’ll show a few patterns on how to improve the query performance. A major design element for performance is the query cache. Once a query is executed, parts of the query are maintained in a global cache. Because of query and metadata caching, the second run always...
  • Blog Post: Exploring the Performance of the ADO.NET Entity Framework - Part 1

    Performance Matters No matter what type of application you are developing at some point in the lifecycle of a software application or service, performance matters; this is especially true when accessing data. In this article, I’m going to spend some time exploring the performance of the ADO.NET Entity...
  • Blog Post: ADO.NET performance improvements with the .NET Framework 2.0 SP1

    With the release of Visual Studio 2008 and the .NET Framework 2.0 SP1, there are some bug fixes and improvements in ADO.NET (A list of the general fixes is at http://support.microsoft.com/kb/945757 ) We worked with the CLR team to get improvements like the thread pool improved scalability , and that...
  • Blog Post: ADO.NET Entity Framework Beta 3 Released!

    Announcing the release of the ADO.NET Entity Framework Beta 3 ! The ADO.NET Entity Framework Beta 3 release enables users to visually design models and mappings using Visual Studio 2008 RTM and the .NET Framework 3.5 RTM. This release also incorporates fixes to bugs, performance improvements and...
  • Blog Post: LOB Performance in SqlDataReader.

    I've been answering a few questions here and there about performance for pulling LOB data out of a SqlDataReader and figured a discussion of what's going on behind the scenes may be useful. This analysis is based primarily on the number of copies and movements of data, as well as a bit of code path inspection...
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