advantages and disadvantages of internet essay

, XMLHttpRequest allows us to read and write data on the server without reloading the page, minimize user input. Ajax separates web interfaces from applications (data and presentation). In the past, there was no clear boundary between the two, and the separation of data and presentation, it is conducive to the division of labor and cooperation, reduces web application errors caused by non-technical staff modification, improves efficiency, and is more suitable for the current release system. Yo

many years, I once again met this ugly-looking colleague on the Internet and asked him how to win the game. His answer to my question is: the leaders get our conclusion and will almost only look at our "disadvantages". The advantages of most leaders will only take over or not at all. In fact, the advantages of many of

What are the advantages and disadvantages of R language?2015-05-27 programmer Big Data Small analysis R, not just a languageThis article is originally contained in "Programmer" magazine 2010 8th, because of the limitation of space, has been limited, here is the full text.工欲善其事, its prerequisite, as an engineer in the forefront of the IT world, C + +, Java, Perl, Python, Ruby, PHP, JavaScript, Erlang, and s

, it configuration file is very concise, regular configuration makes a lot of things easy to run high efficiency, less resources, proxy powerful, very suitable for the front-end response server.13, Apache in the processing of dynamic has advantages, nginx concurrency is better, CPU memory consumption is low, if rewrite frequent, it is more suitable for Apache. The source of this article: collection, collation from the

Object-oriented and process-oriented programming can only be used in many programming languages, but PHP is different from other programming languages, that is, we can freely choose orIf you are new to PHP, writing code in PHP's process-oriented style may be your only choice. However, if you often go to PHP forums and newsgroups, you should see articles about "objects. You may also see tutorials on How to Write object-oriented PHP code. Or you may have downloaded some ready-made class libraries

The first few to interview were asked a question when configuring the PHP environment, fastcgi and modular installation of their respective advantages and disadvantages? Back on the Internet to find some information, do the following summary. If you want to understand the technical principles of FastCGI, you need to know what a "short lifetime application" is, an

these kinds of frameworks, we usually use a lot of ways to create the XMLHttpRequest object ourselves, this way is more flexible than the previous several frameworks. In addition, here also mention aspnet2.0 of the asynchronous callback interface, it and Ajax can also achieve local no refresh, but its implementation is actually based on the XMLHttpRequest object, but also only support IE, of course, this is a Microsoft competition strategy. 9.ajax Application Examples The above content is rep

When multithreading technology is used and when to avoid it is an important topic we need to master. Multithreading is a double-edged sword. Its advantages and disadvantages must be fully considered during use.Multi-threaded processing can run multiple threads at the same time. Multi-threaded applicationsProgramDividing programs into multiple independent tasks can significantly improve performance in the fo

) Each task must wait for an external resource (such as a remote file or Internet connection).In the same way, multithreading also has many drawbacks that need to be fully considered when considering multiple threads. The main drawbacks of multithreading include:(1) Waiting for the use of shared resources causes the program to run slower. These shared resources are primarily exclusive resources, such as printers.(2) Managing threads requires additiona

Recently, WebService has been used in several projects. Through my own practices and summary of online materials, let's make a summary: Currently, WebService is a hot topic. But what is WebService ?, What are the advantages and disadvantages of WebService and under what circumstances should we use WebService? Under what circumstances should we not use WebService? We need to understand it correctly. In fact,

on standardized and widely supported technology, do not need to download plug-ins or small programs. Disadvantages: 1, Ajax killed the back button, that is, the browser backward mechanism of the damage. 2, there are certain security issues. 3, the search engine support is weaker. 4, the failure of the program's abnormal mechanism. 5, can not use the URL direct access. The above is a small set to introduce the AJAX working principles and

Three Modes and their advantages and disadvantages of LVS, and three modes of lvs LVS Classification LVS-DR: Direct routing, which is the most common method. All ctor and RealServer are in the same physical network (switch) and have only one Nic. LVS-NAT: address translation, packet back and forth through NAT translation, so Director Server (that is, LVS Server) will become a system bottleneck. In NAT mo

We can use the agent service for SNMP protocol. The SNMP protocol proxy has many advantages, and there are also many disadvantages. Next we will explain the content in this regard. First, let's discuss the basic information. Many proxies on the network serve us. As long as we enable UDP/161,162 ports, these proxies will use the Management Information Base (MIB) if you are interested, you can find a bunch of

Java Adapter Mode Recent Learning Java Basics, learning the adapter when puzzled a lot of information on the Internet to check the data, for adapter a lot of information, but the comparison of this article is good, here records, we need to see. Adapter mode is to transform the interface of a class into another interface that the client expects, so that the two classes that do not work together can not match the original interface. Functionally, clas

Online renting is a new way of leasing. With the development of the Internet, it is quickly accepted by young tenants. Online Rental is fast and cost-effective, and the security of intermediary rental is guaranteed. After a period of competition, the advantages and disadvantages of online rental and intermediary rental are gradually presented to everyone -- Firs

it is more flexible than pixel positioning.Disadvantage: unable to deal with complicated percentage positioning in IE. Background-position:0% 0% Background-position:0% 33.33333% Background-position:0% 66.66666% Background-position:0% 100% Tip: you can modify someCodeRun againPrinciple. Unlike pixel positioning, the percentage position indicates the corresponding position inside the container and image as the display position. Why do I need to put multiple icons in an image file when

The pros and cons of single-threaded and multi-threaded The advantages of multi-threaded processingSynchronization applications are easier to develop, but are typically less efficient than multithreaded applications because they need to be completed before a new task can be started. If the synchronization task is completed longer than expected, the application may not respond. Multithreading can run multiple processes at the same time. For example, a

Just started to learn PHP language, see the thinkphp framework and documentation on the Internet, development manuals God horse is very detailed. What are the advantages and disadvantages of this PHP framework compared to other frameworks, and how do you choose it for beginners? Reply content: Just started to learn PHP language, see the thinkphp framework an

Directory: LVS three-mode configuration Comparison of advantages and disadvantages of LVS three working modes LVS three-mode configuration Brief configuration of LVS three (LVS-DR, LVS-NAT, LVS-TUN) Modes What is LVS: Http://www.linuxvirtualserver.org/VS-NAT.html Http://www.linuxvirtualserver.org/VS-IPTunneling.html Http://www.linuxvirtualserver.org/VS-DRouting.html First, install ipvsadm

B/S and C/S software architecture. 　　B/SYesBrowser/ServerIt refers to the browser and server. No special software is installed on the client. You only need one browser (thin client) 　　C/SYesClient/ServerThe client and server can access the server (fat client) only after the client software and corresponding environment are installed on the client) Comparison of advantages and disadvantages of B/S and C/S: 1