本文转自:https://weblog.west-wind.com/posts/2013/Dec/22/Entity-Framework-and-slow-bulk-INSERTs I’ve been working on an internal project where I needed to load up a large amount of records into a database for testing. On this project I’m using Entity Fram…

http://weblogs.asp.net/pwelter34/entity-framework-batch-update-and-future-queries…

本文转自:http://izzydev.net/.net/oracle/entityframework/2017/02/01/Porting-to-Oracle-with-Entity-Framework.html We had to port our giant-_ish_, Entity Framework based application to work on Oracle RDBMS (11g, later 12c). We did it. And we learned a lot.…

Entity Framework是.NET平台下的一种简单易用的ORM框架,它既便于Domain Model和持久层的OO设计,也提高了代码的可维护性.但在使用中发现,有几类业务场景是EF不太擅长的,比如批量写入大量同类数据,为此本人做了一些对比测试,以供大家参考. 现假设我们需要做一个用户批量导入的功能,需要从某处导入1k~1w个User到SQLServer数据库,本人听说过的常见做法有如下几种: 使用ADO.NET单条SqlCommand执行1w次(根据常识作为EF的替代其性能还不够格,所以…

Entity Framework  是微软推荐出.NET平台ORM开发组件, EF相对于ado.net 的优点 (1)开发效率高,Entity Framework的优势就是拥有更好的LINQ提供程序.文档,并且是由微软所支持的,用EntityFramework就是开发速度快(当然,那是在会linq的基础上),智能感知(也是linq支持的结果),通过实体.关系型数据库表之间的映射,使开发人员可以通过操作表实体而间接的操作数据库,大大的减少了代码量.不用定义实体类那些东西了.直接与数据库中模型结合起…

原文:http://www.codeguru.com/csharp/.net/net_asp/mvc/using-the-repository-pattern-with-asp.net-mvc-and-entity-framework.htm Introduction Data driven web applications need to have a neat strategy for data access. One of the important aspects of this str…

本文内容为转载,重新排版以供学习研究.如有侵权,请联系作者删除. 转载请注明本文出处:Professional C# 6 and .NET Core 1.0 - 38 Entity Framework Core ----------------------------------------------------------------------- What's In This Chapter? Introducing Entity Framework Core 1.0 Using Depe…

本文转自:http://entityframework.net/improve-ef-add-performance When you overuse the Add() method for multiple entities, your application suffers from performance issues.           1 using (var ctx = new CustomerContext()) 2 { 3 foreach(var line in lines)…

Improve response times and handle more users with parallel processing Building a web application using non blocking calls to the data layer is a great way to increase the scalability of your system. Performing a task asynchronously frees up the worke…

UPDATE: the source code for DbContextScope is now available on GitHub: DbContextScope on GitHub. A bit of context This isn't the first post that has been written about managing the DbContext lifetime in Entity Framework-based applications. In fact, t…