http://rosslawley.co.uk/introducing-a-new=mongodb-spark-connector/…

E212: Can't open file for writing Press ENTER or type command to continue 出现这个错误的原因可能有两个: 1.当前用户的权限不足 2.此文件可能正被其他程序或用户使用. 一般错误原因都是前者,解决方案是在使用vi命令打开文件时,前面加上sudo来临时提供管理员权限,比如使用命令“sudo vi hosts”打开编辑文件. 由此看来,sudo命令是很有用的,当我们执行某种操作系统提示诸如“operation not perm…

在linux上使用vi命令修改或者编辑一个文件内容的时候,最后发现使用<Esc+:+wq!>无法保存退出,却出现,如下提示: E212: Can't open file for writing Press ENTER or type command to continue 出现这个错误的原因可能有两个:    1.当前用户的权限不足:    2.此文件可能正被其他程序或用户使用.         一般错误原因都是前者,解决方案是在使用vi命令打开文件时,前面加上sudo来临时提供管理员权限,比…

January 2014 Containing twenty-four design patterns and ten related guidance topics, this guide articulates the benefit of applying patterns by showing how each piece can fit into the big picture of cloud application architectures. It also discusses…

转自:https://blog.yugabyte.com/distributed-postgresql-on-a-google-spanner-architecture-storage-layer/ In this post, we’ll dive into the architecture of the distributed storage layer of YugaByte DB, which is inspired by Google Spanner’s design. Our subs…

“Do you pine for the nice days of Minix-1.1, when men were men and wrote their own device drivers?” Linus Torvalds Pre-requisites In order to develop Linux device drivers, it is necessary to have an understanding of the following: C programming. Some…

本文转自:http://technet.microsoft.com/en-us/library/ee470675(v=sql.100).aspx SQL Server Technical Article Writer: Doug Wheaton (Attunity Ltd.) Technical Reviewer: Ramakrishnan Krishnan (Microsoft), Robert Zare (Microsoft), Jeff Bernhardt (Microsoft), Dav…

How to Use DTrace to Troubleshoot Java Native Memory Problems on Oracle Solaris 11 Hands-On Labs of the System Admin and Developer Community of OTN by Wang Yu, Vincent Liu, and Gary Wang This lab will introduce the basic concepts of DTrace and provid…

转自:https://dave.cheney.net/practical-go/presentations/qcon-china.html?from=timeline   1. Guiding principles If I’m going to talk about best practices in any programming language I need some way to define what I mean by best. If you came to my keynote…

I had been waiting for the latest MySQL connector for .NET to come out so I can move on to the new and sleek Visual Studio 2012 for my projects. Found out connector 6.6.4 has been out which can work with VS2012 so I happily install it. I start a bran…