agile advantages and disadvantages

Original article, reprinted Please note:Reprinted from All-iPad.netLink:Advantages and disadvantages of Corona SDK If you are using or planning to use corona SDK, you certainly hope that the more features, the better, the more advantages, but in fact, any SDK has its applicability, there are specific user groups, so there must be some less outstanding places. Someone made some comments on corona on the m

This article is not a discussion session, nor a cookie, now many sites are talking to put cookies, called cookies based session, the following is to discuss the advantages and disadvantages of the cookie based sessions: Advantages: 1. Reduce server pressure, such as PHP session by default is the file storage format, which will be less disk pressure, will not ca

excessive set of candidate items? application field: Consumer market price analysis, intrusion detection. Mobile communication FieldLink Mining--pagerank? Core idea: based on a lot of high-quality web links to take over the page, it is inevitable that the return of high-quality web pages. To determine the importance of all pages? algorithm Strengths: completely independent of the query. Only relies on the web link structure to be able to calculate offline? The disadvantage of the algorithm: ign

;> commands. Getstatus ( '/bin/ls ' ) '-rwxr-xr-x 1 root 13352 Oct 1994/bin/ls ' See Also Module subprocess Module for spawning and managing subprocesses. Python_cmd of various methods and advantages and disadvantages (subprocess. Popen, Os.system and Commands.getstatusoutput) Category: Linux prog

A period of time to interview, was asked a question, suddenly do not know how to answer, and then check the check, just know how it is, now summarize it. The copy constructor and assignment operators are used to create a copy of the object. In some cases, the copy constructor is implicitly called by the compiler, such as when the object is passed by value. Advantages: Copy constructors make it easy to copy objects. STL containers

above summarizes the implementation of three kinds of inheritance methods. But each method has its advantages and disadvantages. If the parent class is like this: Parent function Person (hair,eye,skin) { This.hair = hair; This.eye = eye; This.skin = skin; This.view = function () {return This.hair + ', ' + This.eye + ', ' + This.skin; } } How the subclass should be desi

Now backbone, Emberjs, Spinejs, Batmanjs and other MVC frameworks have come to the attack. Commonjs, AMD, Nodejs, Requirejs, Seajs, Curljs and other modular JavaScript are coming. Web front-end has evolved into a large front-end, the Web front-end development faster. 1 Let's see what modularity is? Modularization is a method of separating the system into independent functional parts, which can be divided into separate functional parts, which strictly define the transparency between module in

information management. This article in the literature review of the way, respectively, discussed: 1. The advantages and disadvantages of tagging; 2. Tagging system and its UI design 1. Advantages and disadvantages of tagging 1-1. Tag and tagging tag as metadata (metadata): metadata is the so-called description of

This article mainly introduces the advantages and disadvantages of SQL Server, Mysql, Oracle Three kinds of databases, the need for friends can refer to the followingfirst, SQL ServerAdvantages:Ease of use, scalability for distributed organizations, data warehousing for decision support, integration with many other server software, and good price/performance ratio;Provides flexibility for data management an

First, why do you want to create an index (advantage)?Creating an index can greatly improve the performance of your system.First, by creating a unique index, you can guarantee the uniqueness of each row of data in a database table.Second, it can greatly speed up the retrieval of data, which is the main reason for creating indexes.Thirdly, the connection between tables and tables can be accelerated, particularly in terms of achieving referential integrity of the data.Finally, when using grouping

to consider JPA alternativesThe version of Java that you use determines whether you can actually apply JPA. JPA is part of the EJB 3.0 specification, which is part of the Java EE 5 version. If you have not updated to Java EE 5, you cannot use JPA.Your application requires services that JPA cannot provide, such as those provided by the EJB container, in which case you rely more on EJBS.Before concluding the discussion of this framework, let's list some of the

Some time ago, although a company's project was maintained a few years ago, it was not a long history, but it was still a few years ago. The three-tier architecture, coupled with the old architecture of stored procedures, was adopted, this architecture is no problem. Most systems do this. However, due to the misuse of the storage process of this system, it is difficult to maintain it in the future, any adjustments involving the database must be made to the stored procedures, Entity classes, SQL

: This article mainly introduces the advantages and disadvantages of Apache and Nginx. For more information about PHP tutorials, see. Http://blog.csdn.net/xifeijian/article/details/17385741 1. Advantages of nginx over apache:Lightweight and web services, which consume less memory and resources than apacheAnti-concurrency: nginx processes requests asynchronously

Advantages and disadvantages of indexes Why do you create an index? This is because creating an index can greatly improve the performance of the system. First, by creating a unique index, you can guarantee the uniqueness of each row of data in a database table. Second, it can greatly speed up the retrieval of data, which is the main reason for creating indexes. Thirdly, the connection between tables and ta

as those provided by the EJB container, in which case you rely more on EJBS.Before concluding the discussion of this framework, let's list some of the advantages and disadvantages of using JPA as a persistence framework.What are the advantages of JPA?JPA is standards-based. A growing number of providers are looking to provide JPA implementations in the near futu

need to install, there is a Web browser can (2) BS architecture can be placed directly on the WAN, through a certain degree of access control to achieve the purpose of multi-client access, interactivity is strong.(3)The BS architecture does not need to upgrade multiple clients to upgrade the server. Cons: (1) on cross-browser, the BS architecture is not satisfactory. (2) It takes a lot of effort to achieve the degree of CS program.(3) The high cost of design for speed and security is the bigges

multi-client access, interactivity is strong.(3)The BS architecture does not need to upgrade multiple clients to upgrade the server. Cons: (1) on cross-browser, the BS architecture is not satisfactory. (2) It takes a lot of effort to achieve the degree of CS program.(3) The high cost of design for speed and security is the biggest problem in the BS architecture.(4) C and S interaction is a request-response pattern, which usually requires a refresh of the page, which is not a customer's pleasure

the tile. ,,, a frame all the rendering commands after the execution of vertex shader generation triangle, each tile will have a triangle list, this list contains the need to draw inside the tile all triangle. Then the GPU then executes each tile raster and per-fragment based on the Triangle list operationThe advantages of TBR are:There is no need to repeatedly access the frame buffer,depth buffer,stencil buffer when performing raster and per-fragmen

Apache processes, thereby denying service. 11, can look at the Nginx Lua module: Https://github.com/chaoslaw...apache more than Nginx module, can be directly implemented with LUA Apache is the most popular, why? Most people don't bother updating to nginx or learning new things.12, for Nginx, I like it configuration file written very concise, regular configuration makes a lot of things easy to run high efficiency, less resources, powerful proxy, very suitable for the front-end response server13,

of Apache processes, thereby denying service. 11, can look at the Nginx Lua module: Https://github.com/chaoslaw...apache more than Nginx module, can be directly implemented with LUA Apache is the most popular, why? Most people don't bother updating to nginx or learning new things.12, for Nginx, I like it configuration file written very concise, regular configuration makes a lot of things easy to run high efficiency, less resources, powerful proxy, very suitable for the front-end response server