And this: http://www.nedworks.org /~ Mark/presentations/San/wikimedia%20?ture=
Architecture of AmazonAmazon evolved from a small online bookstore to the largest online bookstore in the world today. They opened up new ways for customers to evaluate, review, and recommend products.Platform
Inux
Orace
C ++
Per
Mason
Java
JBoss
Servets
Status
More than 55 million active customer accounts
Over 1 million active retail partners worldwide
The number of services required to build a page
cross-cutting technique allows AOP to traverse established responsibilities (such as logging and performance optimization) in a given programming model.
If no cross-cutting technology is used, what is the situation of software development? In traditional programs, because the implementation of cross-cutting behaviors is
Do the website, generally is to target the user group, the service which provides to the website, to the competitor, to the website Place's market environment carries on the analysis, the plan, and according to the analysis to the data takes some unique strategy.
But as a webmaster, in addition to a set of sound management planning program, but also should do some more details of things, so that the site can be done from the root, this
Currently, there are few learning resources or technical documents about OSGI technology in the industry. I searched for "OSGI" books in a certain treasure net, but the results were there, but the kind was poor and few people bought it.
I need to learn OSGi for the reason of my work, so I have to try my best to learn OSGi actively. I will learn the entire process of OSGi with a textual record, by organizing books and video tutorials, to make me more aware of this technology, but also to have a c
molecules and atoms, but if you come to the magnitude of-15, found can be divided into nuclei and electrons, and then go down, and can get quarks, so you need to choose the right resolution according to your purpose.
Second, the quality of data
We all know that in the process of data acquisition, due to a variety of reasons, there will be a measurement error, the random part we often call noise, and the system part we call it pseudo-image. The existe
What is JNDI?
Jndi is the Java Naming and directory interface (Java naming and directory Interface), which is one of the important specifications in the EE specification, and many experts believe that there is no thorough understanding of the significance and role of Jndi, T
the head came from a pleasant voice;"Little Cen Ah, is that you?" The sweet voice came from the head of the telephone, and it was familiar but could not remember."Hello, are you?" Polite reply to a sentence."I don't even know you? You're a forgetful man!" Telephone that head is still leisurely, the author tries to recall a bit, do not remember, do not know what
What is 1.1.1.Spring?Spring is an open source lightweight Java SE (Java Standard Version)/java EE (Java Enterprise Edition) Development application framework designed to simplify enterprise application development. An application consists of a set of objects that work together. In traditional application development, a complete application consists of a set of mu
, but they are not the only documents to be generated. Eventually, some people will be expected to use the software. Similarly, the system may also require subsequent modifications and enhancements. This means that, like a hardware project, auxiliary documents are equally important to software projects. Although the user manual, Installation Guide, and other documents that are not directly linked to the design process are temporarily ignored, there are still two important requirements that need
What is an efficient software? An efficient software should not only run faster than software that implements the same functionality, but it should also consume less system resources. This article brings together some of the experiences that the author has accumulated while using VB for software development, and shows you how to write efficient VB code with some simple examples. It contains some techniques
inexplicable. As a DBA, other users in the system have the authority of Microsoft SQL Server. DBAs should quickly diagnose, accurately judge, and quickly fix problems and problems. In this sense, DBA is a professional doctor of database systems.This chapter is a summaryThis chapter first analyzes why the database is used to manage business data, and then provide
Application development Process 1,questions to consider for iOS development who is the user? the content and user experience of different applications varies greatly depending on what application you want to write, which may be a children's game, a to-do list application, or an application that tests its own learning results.What is the
development of windows, the application software is getting bigger and more complex, so some companies specialize in the production of installation programs. For example, Installshield is a relatively famous and widely used installation software, now windwos has a dedicated installer, Microsoft installer. What is the
, I summarize my experience to improve communication with readers.
The author will use a simple UML (Unified Modeling Language, Unified Modelling wide Ge) later ). Since there are many books on UML on the market, and the UML used by the author in the future is extremely simple, it is only a very simple introduction here, the purpose
the person, give him some tasks, let him go to operate, and then to observe, listen to his feelings.Quality scope #6: maintainabilityThe purpose of maintenance is many, such as product upgrade, function upgrade, patching and so on. This is a common task for a formal and long-term system, especially for server software. The quality of these aspects
What is an efficient software? An efficient software should not only run faster than software that implements the same function, but also consume less system resources. This article brings together some experience accumulated by the author when using VB for software development, and demonstrates how to write efficient VB code through some simple examples. This includes some techniques that may be very helpf
, and JS scripts (CSS animation and JS animation ).
Animation execution efficiency, video and audio operations
A weak question: Has W3C and other standardization organizations been busy for N years? Can HTML5 + CSS3 + JavaScript meet our needs? Do you really want to work for the front-end or try to break her down? In particular, there are a lot of CSS attributes. In fact, they are not easy to use. They are not easy to use !!!!!
I once liked Flash very much, because she can express it in all pl
You may be familiar with Unix, but you may be unfamiliar with awk, which is not surprising. Indeed, compared with its excellent functions, awk is far from its proper popularity. What is awk? Unlike most other UNIX commands, we cannot know the functions of awk in terms of names: it
I have never seen such a fan in other languages that easily shows the ugly side of human nature, even the C ++ and C attacks that started more than a decade ago, when GC and non-GC are sprayed, static type dynamic type is sprayed, and even when the cloud wind is sprayed with C ++, the brain is not affected. This happens only to the brains of the go language.
language. Because the current Code "too old" is too ugly ", it is very naive to give up the existing code and try again. Refer to Things You shoshould Never Do, Part I
. The central idea is simple: programmers who write their current Code are not stupid. In addition, it is likely that you will be smarter to add one.
I
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