Ajax, Computer Networking

Ajax is a relatively new set of techniques that, in a sense, implement some of the functionalities originally provided by RPC. Ajax is primarily used to build web applications with good performance and interactive responsiveness. The name comes from "Asynchronous JavaScript and XML" (though the general technique doesn't necessarily need to use JavaScript or XML).

The idea is to use JavaScript (or the equivalent) to run a web application in your browser, and do as much as possible on your computer, minimizing data exchanges over the network. Typically, Ajax applications are designed so that most data exchanges can be asynchronous and in the background. This means that you will be able to keep doing useful work with the application even on a relatively slow network connection.

Ajax resembles RPC because most of the processing can be done "remotely" on the client, instead of on the server. A good example of this technology is Google Maps. One reason why Google Maps works so well is because it explicitly uses the fact that most users own a fairly fast computer, and thus lots of the actual processing can be done locally. The user just needs to fetch asynchronously each piece (tile) of the map, and, when these are received, he or she can process them locally. If, on the other hand, we were to send every mouse movement to Google, and expect all processing to be performed remotely, we would end up with a very slow and impractical system. Notice that because Ajax is asynchronous, it scales very well with slow connections. Ajax does not block waiting for pieces of data to arrive beforemaking the systemusable. Instead (in the case of Google Maps), we notice that the user is allowed to manipulate the map (panning around, zooming in, etc) even when the map itself has not yet been completely received.

Posted Date: 3/13/2013 6:25:25 AM | Location : United States







Related Discussions:- Ajax, Assignment Help, Ask Question on Ajax, Get Answer, Expert's Help, Ajax Discussions

Write discussion on Ajax
Your posts are moderated
Related Questions
What is a dedicated server? A network server designated to provide one particular service is known as dedicated server. For example if a computer is assigned for database servi

OSI= Open System Interconnection.

Q. What is network layer of osi model? - Describe end-to-end delivery of packets. - Defines logical addressing thus that any endpoint can be identified. - Defines how ro

Urgent Pointer This 16 bite which is valid  only f the urgent  flag is set is used  when the segment  contains  urgent data. If  defines  the number  that must be  added  t

NICs AND NETWORK HARDWARE:  NIC is create for one kind of physical network. For example Ethernet interface may not be needed with token ring and similar ATM interface cannot b

Control Commands: The STAT command is used as a way for the client to confirm that the server is still responding properly. The server must simply send a positive command res

MPI contains hundreds of functions, a small subset of which is enough for most practical purposes. We shall talk about some of them in this unit. Functions for MPI Environment:

Prepare the Network Cable a network that is similar to the one in the topology diagram.  You can use any current switch in your lab as long as it has the needed interfaces

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Advantages There are  times when  using  packet filters makes  sense. If the  connections require high  throughput  or the protocols  has proprietary technology that makes  it