The .NET framework comes with a variety of different serializers. Hopefully, my overview of these serializers will have provided some insight into the differences between them and the various advantages and disadvantages of using different serializer…
问题 你想为多次用到的查询提高性能,而且你不想添加额外的编码或配置. 解决方案 假设你有如Figure 13-8 所示的模型 Figure 13-8. A model with an Associate and its related Paycheck 在这个模型里,每个Associate(同事)有0到多个Paychecks(薪水),你有一个LINQ查询,它在你的整个应用程序中重复使用,你想仅编译一次,然后复用这个已编译的版本,通过这种方式来提高这个查询性能. 当针对数据库执行时,EF必须把你的…
转自http://prinx.blog.163.com/blog/static/190115275201211128513868/和http://www.cnblogs.com/jie465831735/archive/2013/03/06.html 按如下顺序看效果最佳: 1. MapReduce Simplied Data Processing on Large Clusters 2. Hadoop环境的安装 By 徐伟 3. Parallel K-Mea…
本文转自:http://msdn.microsoft.com/en-us/library/bb445504.aspx Scott Mitchell April 2007 Summary: This is the Visual C# tutorial. (Switch to the Visual Basic tutorial.) The default-paging option of a data presentation control is unsuitable when working w…
8 Tactics to Combat Imbalanced Classes in Your Machine Learning Dataset by Jason Brownlee on August 19, 2015 in Machine Learning Process Has this happened to you? You are working on your dataset. You create a classification model and get 90% accuracy…
Introduction Apache Kafka is a distributed publish-subscribe messaging system. It was originally developed at LinkedIn Corporation and later on became a part of Apache project. Kafka is a fast, scalable, distributed in nature by its design, partition…
