Ajax, Computer Networking

Assignment Help:

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.


Related Discussions:- Ajax

Describe asynchronous vs. synchronous transmission, Serialized data is not ...

Serialized data is not generally sent at a uniform rate by a channel. Instead, there is usually a burst of regularly spaced binary data bits followed by a pause, after which the da

Programming based on data parallelism, Programming Based on Data Parallelis...

Programming Based on Data Parallelism In a data parallel programming model, the focus is on data distribution. Every processor works with a portion of data. We shall discuss on

Data transfer - tcp connection management , Data Transfer After  conne...

Data Transfer After  connection  is established  bidirectional  data transfer  can take  place. The client  and  server  can both  send data  and acknowledgments. Figure  show

Describe in brief about tree topology, Tree topology Comments 1 -...

Tree topology Comments 1 - This features star nodes on a bus network 2 - All the disadvantages and advantages of both types of networks described above apply to this s

What is uniform resource locator, What is Uniform Resource Locator A...

What is Uniform Resource Locator Address of location for accessing Web pages. Clicking on an icon or "hot text" is the most common means of accessing and using a URL. Typing

url connection instance, What is the difference among URL instance and URL...

What is the difference among URL instance and URL Connection instance? Ans) A URL instance represents the location of a resource, and a URL Connection instance shows a link for

Write the concept of simplex, Describe Concept of Simplex, Half Duplex and ...

Describe Concept of Simplex, Half Duplex and Full Duplex dialogs?

Header length - transport layer, Header  length This  field  speci...

Header  length This  field  specifies the  length of the TCP header  in 32 bit  words. This  information  allows  the receiver to know  the beginning of the data area becau

Comparison of distance-vector and link-state algorithm, DISTANCE-VECTOR ROU...

DISTANCE-VECTOR ROUTING: It is easy to implement. Packet switch modifies its own routing table first. It is used in RIP. LINK-STATE ALGORITHM: It is ve

Explain radio wave, Explain Radio Wave. Although Radio waves are common...

Explain Radio Wave. Although Radio waves are common and well understood, we are just starting to realize their enormous potential as a networking medium. Radio waves can operat

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd