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MogileFS and Fastdfs's personal insights June 9, 2013 1 reviews MogileFS Fastdfs for two open source Distributed File system, are mainly used for Internet file sharing, upload, download and other functions, mainly for multi-upload and download, not often modified operations. The M and F deployment architectures are similar in that they are designed to avoid a single point problem in a cluster.MogileFS————————-official website : http

After several years of development, I have experienced some ups and downs. In this process, I am constantly adjusting myself, hoping to move forward according to the specified goal, it does not offset the direction because of various external resistance. At the same time, I also experienced a lot of confusion and confusion, and even doubted what the result of such a life would be, but I finally adjusted it myself and continued to struggle. If you do well today, tomorrow will be available. I woul

Http://www.cnblogs.com/ltp/archive/2006/06/11/422859.html After several years of development, I have experienced some ups and downs. In this process, I am constantly adjusting myself, hoping to move forward according to the specified goal, it does not offset the direction because of various external resistance. At the same time, I also experienced a lot of confusion and confusion, and even doubted what the result of such a life would be, but I finally adjusted it myself and continued to struggle

a.py from Import b Print ' ---------This is module a.py---------- ' def A (): Print " Hello, a " B () A ()b.pyPrint ' ----------This is module b.py---------- ' def b (): Print " Hello, b " def C (): Print " Hello, c " C () from Import ARun a.py, results:Analysis:First to go to b.py to find B (), and b.py in the creation of the function directly after the B to it, and finally b.py to a.py to a, because b.py has been wanted, promised to a.py want. That is, I want you to give me

Some insights on Java --- the bottom layer developer's learning experience, java --- In the past few years, I have been engaged in C, C ++, and I have always wanted to know more about the upper layer. So I used my spare time to read something about Java and used some architectures to build some simple programs. I would like to briefly talk about my own insights here. 1. Java is really very convenient. I hav

Original title: Some personal insights on the ado.net connection pool (Connection pool)Here is the original:Establishing a pool connection can significantly improve the performance and scalability of your application. The SQL Server. NET Framework Data Provider automatically provides connection pooling (MSDN) for ado.net client applications.Opening A database connection is a resource intensive and time consuming operation. Connection pooling increases

For database administrators facing heavy management tasks every day, improvements in product performance, especially in management performance, may be the most leap to them. SQL Server 2008 Performance Promotion "Four Kings" are mission-critical platforms, dynamic development, beyond relational data and pervasive business insights. The first and fourth items are for data maintenance and management. SQL Server 2008 's promotion of mission-critical and

, and delete and change SQL statements5) Understanding Ajax Knowledge6) Understanding JSON knowledge7) Know a certain network request knowledgeThe above conditions can also not have, but to have a little, quiet heart to learn, the initial can divert, practice makes perfect.Use Appcan to develop, of course, need to download its IDE, see: http://newdocx.appcan.cn/index.html?templateId=368In addition, an account can be registered on the http://www.appcan.cn/Developer's website, which can be used to

1. Work Path issues　　1. Multi-project solution, Web app as the working path when starting project//EXE file name currently executing//C:\\Program Files\\iis Express\\iisexpress.exeSystem.Diagnostics.Process.GetCurrentProcess (). Mainmodule.filename//gets and sets the fully qualified directory of the current directory (the directory from which the process starts)//C:\\Program Files\\iis ExpressSystem.Environment.CurrentDirectory//gets the current working directory of the application. This is not

These days some people say that the Android app may run on Windows Phone later on. Personal opinion: It is unlikely that Windows phone is compatible with Android for reference to the instance that BB10 was killed. AppX now looks like Android, iOS can do, reference VS2015 preview performance, with appx to invade other platform software market is feasible, than the Windows Phone introduced Android apk reliable. Arguing that Windows Phone-compatible Android will only cause WP's woes to widen, Andro

Xcode Upgrade Vvdocumenter plugin failed to do??First give a complete installation reference: http://www.th7.cn/Program/IOS/201405/212030.shtml Reference this can be fully installed, after installation restart Xcode, open a new project tipsLoad Bundle and Skip Bundle must be selectedLoad Bundle If you accidentally choose the wrongHere's the solution, go to folder ~/library/application support/developer/shared/xcode/ See the generated Xcplugin file in the Plug-ins directory; , right-click

busy at work, we are always overwhelmed, with a lot of things, testing bugs, new customer needs, and leading tasks .. Based on my reading experience, I applied my work to do only one thing at a specific time, which greatly improves my work efficiency. at work every day, before doing one thing, I first open the blog Park, keep him in his diary, and write another one, so that my heart will be relatively calm and will not be overwhelmed. The following figure shows one day (January 1, August 25 ):

object is the same as that of the record level (debug (), Info (), fatal ()......). The logger object is created through the logmanager object. It is recommended that the logger object name be the same as the program class name. Call the getcurrentclasslogger () method of logmanager to automatically create a logger object for the current class. The background code is as follows: Using nlog; namespace wpfapplication4 {/// After completing the preceding steps, you should have a basic understand

Programmer breakout-program debugging analysis (1) My insights from cainiao's evolution Before talking about program debugging and analysis, we still understand some basic conceptual things (now we are engaged in Java, so we have taken Java as an example) 1. BugCategory According to the program stage and the analysis of msdn and some books I have read, bugs are divided into compilation errors, runtime errors, and logic errors. (1) Compilation Error Ge

students to put aside situations that are unfavorable to their schools and teachers and find what they should do ", it is not conducive to the work of students and schools, and you can find your own work. Our work is to use our own efforts to eliminate these disadvantages and create new situations. I don't want to go earth-shaking, but I want to make a gradual change. Therefore, in the face of the problem of "students do not learn", we need to expand from behavior patterns, cognitive patterns,

label: Style Color ar SP Div art on problem BS today's products often cannot complete programs at once, after the customer experience, generally add or modify the program. For newly added programs, I will often add one more flag or , this is easier to understand than explain, but the logic is not as good as . What's fatal is that, because the flag is not cleared in time, the consequences may be unimaginable. of course, experienced programmers often think of this problem, that is, wh

call.Another example is MVC.For example, from a certain point of view, the persistence (DAO layer) and service responsibilities of a person both belong to the person's responsibilities, but obviously they cannot be put together, the reason is that the persistence layer is almost unchanged, while the business layer is complicated and changeable. The persistence layer is highly reusable after isolation.Finally, the appearance mode and proxy mode are mentioned. These two modes can be used to separ

quiet of the night, thinking about the people left, silently left tears, you how to wait for me.Summary: Technology, is constantly updated iteration, but must have a set of their own knowledge system, their own understanding, do not think AH ~ I will write this mapreduce, I will write the spark backstage code, I will use HBase, I will storm, complacent, Look farther a little deeper, you will find that I do not have anything, learning! Insist! Insist! Insist! Insist! Hold on again! With your ten

After four days and nights of work, the project was finally implemented by users to celebrate. During the implementation of the project, I had some insights. I recorded them a bit and used them as memos. 1. Our project can only be put into implementation when on-site users are not in production. This is a demanding task, especially when there are strict requirements on the project progress. This is because there are very few non-production scenarios

There are many aspects of project development and occasional insights. Now let's record them and hope you can talk about your own views and experiences. 1. Understanding of project development Standardization Nowadays, many Chinese software enterprises are not flattering in the development process. Of course, Chinese enterprises are learning this or that development specification, and there are also a few projects, this development method is al