EF Core (RC2)
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- Entity Framework Core (EF Core) 1.0 is a re-write of Entity Framework from the ground up to be lightweight, extensible, and support new platforms and data stores. - EF Core 1.0 focuses on being code-first only and supports relational databases via providers, while also aiming to support non-relational stores. - EF Core is optimized for memory and CPU usage compared to the larger EF6 by using a modular, dependency-injected core and pay-per-play components. - EF6 will still be supported but EF Core is meant for new applications targeting .NET Core and platforms like ASP.NET Core and Universal Windows Platform.
EF Core (RC2)
- 1. Ido Flatow Entity Framework Core (EF Core) 1.0 Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatowJoin the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow
- 2. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow About Me Senior Architect, Sela Group Microsoft Regional Director, and an ASP.NET/IIS MVP Co-author of courses and books Focus on server, web, and cloud
- 3. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Entity Framework Project Status New runtime components on NuGet Core runtime components in .NET Tooling in Visual Studio Runtime in .NET Framework Tooling in Visual Studio Runtime on NuGet Tooling on Microsoft Download Center Latest version included in Visual Studio
- 4. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Today Written to target relational databases EF6.x DLL files are over 5MB Runs only on full .NET Framework No support for batch updates
- 5. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow EF Core Key Features Rewritten from the ground up to be lightweight (under 1MB) New platforms & data stores IoC friendly and extensible Optimized query generation Code-First only Batching
- 6. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow .NET FRAMEWORK .NET CORE XAMARIN APP MODELS BASE LIBRARIES New Platforms
- 7. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow New Data Stores Relational & non-relational Not a magic abstraction High level services that are useful on all/most stores Non-common concerns handled by provider extensions Example providers Relational (SQL Server, SQLite, Postgres, SQL Compact etc.) In Memory (for testing) Azure Table Storage Redis cache Just relational providers for v1.0
- 8. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Lightweight & Extensible Core Same top level experience as EF6.x Still DbContext/DbSet etc. New core Core = metadata, change tracking, query pipeline, etc. Built as a collection of services with dependency injection Easier to replace/extend services Replace confusing APIs & behavior Optimized for memory and CPU usage Pay-per-play components
- 9. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow EF6.x – The End?! Will continue to be a supported release Microsoft will continue with bug fixes and small improvements to the code base First preview of EF6.2 will be available shortly after EF Core reaches RTM
- 10. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Some New Features Mixed C#/database eval in LINQ queries Batch save SQL query improvements Shadow state properties Alternate keys TrackGraph API
- 11. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow EF Core Basics
- 12. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow LINQ and SQL Query Improvements
- 13. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Simplified Metadata API
- 14. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Extensible Core
- 15. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow New Data Stores
- 16. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow New Features
- 17. Demo Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow New Platforms
- 18. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow EF Core 1.0 Feature Status (condensed version) Backlog Lazy loading Complex value types Stored procedure mapping Data seeding Update model from database Many-to-many relationships without a join entity Inheritance mapping with TPT and TPC Command interception In Progress Bug fixing Performance improvements LINQ improvements Documentation and Intellisense Thrown out EDMX Entity SQL ObjectContext API
- 19. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow EF Core & EF6.x EF6.x will be the right choice for many applications Carefully evaluate requirements if considering EF Core Some important features not implemented in 1.0 (e.g. lazy loading, stored procedure mapping, etc.) Less mature code base (e.g. LINQ translator has limitations) EF6.x to EF Core is “port” not “upgrade” Very basic code will port easily Many APIs have changed drastically Beware of behavior differences in similarly named APIs
- 20. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow When to Use EF Core? New applications that do not need the features that are not yet implemented in EF Core Applications that target .NET Core, such as Universal Windows Platform (UWP) and ASP.NET Core applications
- 21. Join the conversation on Twitter: #ndcoslo // @NDC_Conferences // @idoFlatow Next Steps Documentation docs.efproject.net github.com/aspnet/EntityFramework/wiki/Roadmap Repositories github.com/aspnet/EntityFramework github.com/rowanmiller/Demo-EFCore Blogs blogs.msdn.microsoft.com/dotnet blogs.msdn.com/b/adonet (older) My demo code git.io/voYzr
Editor's Notes
- #19: https://github.com/aspnet/EntityFramework/wiki/Roadmap#features http://www.c-sharpcorner.com/article/new-features-of-entity-framework-7/