nosql architecture patterns

[ArticleAuthor: Sun Li link: http://www.cnblogs.com/sunli/ updated by: 2011-2-21] The previous two articles, "Why use nosql" and "relational database or nosql Database", roughly introduced why nosql should be used and when nosql should be used. I often feel confused when I see the introduction of

The previous "Why Use NoSQL" and "relational database or NoSQL database" two articles generally explain why NoSQL is used, and when to use NoSQL. Often have friends encounter confusion, see the introduction of NoSQL, feel very good, but do not know how to formally use their

NoSQL architecture practice (I)-supplemented by NoSQL (1) using NoSQL as an image It does not change the original architecture that uses MySQL as the storage, uses NoSQL as the auxiliary image storage, and uses the advantages of

a well-written and concise article. Transferred from: http://dev.yesky.com/378/2012378.shtml Because [GOF95] is the first of a book on software patterns and is one of the most popular books in oo design theory, some people often use the term design pattern to refer to any type of schema, design, or program implementation that directly deals with software. Others emphasize the partitioning of three different levels of

Tomcat system architecture and Design Patterns, part 2nd: Analysis of design patternsThis two-part series studies the system architecture of Apache Tomcat Server and the many classic design patterns it uses. The 1th part analyzes how Tomcat works, and the 2nd section analyzes many of the classic design

-container, and the Request and the Response object in it are like the water flowing in the pipe, and Valve is a small opening on the tube that gives you the opportunity to get in touch with the water inside and do something extra.In order to prevent water from being drawn and not flowing into the next container, there is always a node at the end of each tube to ensure that it will flow to the next sub-container, so each container has a standardxxxvalve. As long as the link is involved in the pr

the parent class, the post-condition (that is, the return value of the method) of the method is stricter than that of the parent class; Dependency inversion principle: Invert dependency to dependency Interface Upper-layer modules should not depend on lower-layer modules. They all depend on an abstraction; Parent classes cannot depend on child classes. They all depend on abstract classes; Abstraction cannot depend on or depend on abstraction; Interface isolation principle: The dependence of a

: Interface high cohesion is internally highly dependent and isolated as much as possible. That is, the method of internal declaration of an interface is related to a sub-module, and is required by this submodule. Interface design is limited: If you fully follow the principle of interface separation, there will be a problem, that is, the design of the interface will be less and less, so that the number of interface increases, the complexity of the system increased suddenly, rather than the

master-slave replication is not unfamiliar (at least mixed face cooked). It's 2:30 in the night, so wash up and sleep. Finally, if you park friends think my article is good or useful to you, trouble points " recommended ", let me more power to write down, thank you! Reference Documents (1) Linux China, "the largest Redis cluster: The secret of the Sina Redis cluster", http://www.linuxeden.com/html/itnews/20131010/144377.html (2) Tianqi, "Redis Replication in Extensible cluster Building", Http:

20% of the requests are just simple traversal, and 80% of the requests do business logic operations. However, if this ratio is reversed, most requests are simply going through the layer and not doing the logical operation. It would be nice to open up some architectural layers. However, because of the lack of hierarchical isolation, the project becomes unmanageable.Pattern AnalysisThe following table analyzes the various aspects of the layered architecture.Overall flexibilityRating: LowAnalysis:

20% of the requests are just simple traversal, and 80% of the requests do business logic operations. However, if this ratio is reversed, most requests are simply going through the layer and not doing the logical operation. It would be nice to open up some architectural layers. However, because of the lack of hierarchical isolation, the project becomes unmanageable.Pattern AnalysisThe following table analyzes the various aspects of the layered architecture.Overall flexibilityRating: LowAnalysis:

misunderstand.And the three layer UI layer is similar to MVC's M and C, functions.and the MVC V and the BLL and DLL, function very much likeAlthough similar, but fundamentally not a thing yo! Because architecture is a software-making idea, and the framework is that people have a specific domain of software common features, written code finished.SoSoftware Architecture > Software Framework > Design Patterns

Architecture, aka Software architecture, is an abstract description of the overall architecture and components of the software that guides the design of large software systems in all aspects.In terms of what a pattern is, the word from architecture is defined as: "Each pattern describes a problem that recurs around us

Opening and closing principle OCP (Open for extension,closed for modification). The core idea of open and close principle is that an object is opened to expansion and closed to modification. In fact, the opening and closing principle means that changes to the class are made by adding code rather than altering the existing code. In other words, once the software developer writes out the code that can be run, it should not change it, but to ensure that it can continue to run, how to do this? Th

/17523945 (5) Cool Breeze, "Building high-performance Database Cache Redis Master-slave Replication", http://database.51cto.com/art/201407/444555.htm (6) Wang Chengwei Podcast, "Redis Open Class for data optimization", http://bbs.itcast.cn/thread-26525-1-1.html (7) Beauty Dance, redis.conf description of Redis configuration file, http://blog.sina.com.cn/s/blog_636415010101970j.htmlAccessories download(1) Redisdemo.masterandslave:http://pan.baidu.com/s/1dd1nigt Transferred from: http://www.cnblog

Design a, software architecture and framework definition The English word for Software architecture is "architecture". The basic meaning of architecture is architecture, architecture, architectural style. Although software

types of software architecture patterns In the design of software architecture, according to different levels of abstraction can be divided into three different levels of the pattern: architectural pattern (architectural pattern), design pattern, code pattern (Coding pattern). · The architecture pattern is a high-leve

Introduction: This issue combines the previous evolutionary architecture with emergent design concepts in an emergency design article with a case study to show how to discover, accumulate, and exploit unexpected design elements in your code. Once you understand how to identify a design element, you can use that knowledge to improve the design of your code. Emergent design allows you to discover those aspects of your code that are unexpected but have b

Below are some Microsoft application blocks, some common. NET components, which are very powerful. Microsoft?Patterns PracticesFor application architecture and design include reference ubuntures and application blocks. Here is a list of suchPatterns PracticesFor application architecture and design. The complete list of pa