Web Caching
The World Wide Web can be considered as a system with huge distributed information which provides access to shared data objects. In recent past years there have been exponential growth in size of WWW, which causes network congestion. There are discrete natures World Wide Web documents with the help of which everyone can find information according to their liking. But, this huge rate of growth has put a heavy load on the Internet communication channels
As the Internet is growing to grow in vogue and size, so have the scalability demands on its infrastructure. Expanding growth without gullibility solutions will finally result in more network load and unacceptable service response times. These are the reasons for which the web users are suffering from the network congestion and server overloading. Web user's bad experience on the performance in World Wide Web increase the gullibility demands on Web’s infrastructure.
It is well-known or all of us that the main reason for the increase in web traffic is due to the rise in popularity of the
…show more content…
The effects of Web caching are two-fold. We can improve the performance of Web with the help of caching pages. There are various advantages of using Web caching.
1. Caching reduces bandwidth consumption, hence it decreases network traffic and diminish network congestion.
2. The caching reduces access latency due to two reasons:
I. Frequently accessed documents are fetched from nearby proxy cache instead of remote data servers, hence the transmission delay is minimized.
II. As Caching can reduce the network traffic, so those documents which are not cached can also be retrieved comparatively faster than without caching, due to less congestion along the path and with less work load on the server.
3. Caching reduces the workload of the remote Web server by spread the data widely among the proxy caches over the
The internet works on the basis that some computers act as ‘servers’. These computers offer services for other computers that are accessing or requesting information, these are known as ‘clients’. The term “server” may refer to both the hardware and software (the entire computer system) or just the software that performs the service. For example, Web server may refer to the Web server software in a computer that also runs other applications or it may refer to the computer system dedicated only to the Web server applicant. For example, a large Web site could have several dedicated Web servers or one very large Web server.
a.k.a. a.k Web. The Web. The Web. 16 Apr. Foner, Eric, and John A. Garraty.
Files location and operation are hidden to clients. Clients don’t need to know how the system is designed, how data is located and accessed, and how faults are detected. The logic name of the file should not be changed even when relocate the file. Client sends requests to handle files without thinking about the complex mechanisms of the underlying system which performs operations. The DFS server just provide an access to the system with some simple tools. DFSs also use local caching for frequently used files to eliminate network traffic and CPU consumption caused by repeated queries on the same file and represent a better performance. And the local caching also give a fast access to those frequently used files. So caching has a performance transparency by hiding data distribution to users. DFSs have their own mechanisms to detect and correct the faults, so that users do not be aware that such fault
Many believe the internet was an over night sensation, that one day, someone invented the internet and it spread in popularity faster than Tickle Me Elmo or the Macarena. Although the internet did have a surge of commercial popularity, with the invention of Mosaic and later with e-commerce, it was created many years ago with the development of military networking technologies. Also, the internet, unlike many pop culture fads of the nineties, will continue to see a growth in popularity and usefulness as a form of media throughout the information age. Sure, the internet became overambitious to the point where many internet start-up companies lost their businesses in the recession of the past few years. The quality of the internet, however, has increased as companies realize that there exists competition and smarter consumers that demand superiority. The internet has taken the world so far in its short commercial life; the future of the internet provides limitless possibilities of a much different future.
DNS is used to provide a mapping between the websites name and their respective IP addresses. DNS caching is a mechanism to cache this Website name–IP address mapping on the DNS server for some amount of time. When number of users in the office or universities access same websites again and again then DNS caching is used to improve the performance of the system as DNS server doesn’t need to do all hierarchical searching using root name servers and TLD name servers for each and every user request. Network will be too overloaded if we don’t use DNS caching as DNS server needs to do number of DNS queries in order to find one IP address. DNS caching stores the IP addresses of frequently used websites in the organization.
Blumenthal, Marjory S., and David D. Clark. "Rethinking the design of the Internet: the end-to-end arguments vs. the brave new world." ACM Transactions on Internet Technology (TOIT)1.1 (2001): 70-109.
The Internet has become a key ingredient of strenuous and busy lifestyle. ‘Internet’ has become the central-hub for communication, explorations, connecting with people or for official purposes. Resultantly, Internet growth has led to a plethora of new developments, such as decreased margins for companies as consumers turn more and more to the internet to buy goods and demand the best prices.
It simplifies the storage and processing of large amounts of data, eases the deployment and operation of large-scale global products and services, and automates much of the administration of large-scale clusters of computers.
Although Proxy Server's ability to cache resources saves on performance over the Internet communication link, it does not decrease the amount of data ultimately transferred to the client. Even if 100 percent of requested data is stored in the proxy server's cache, it will still be sent across your local network to the client computer, increasing network traffic significantly.
The internet, a system that links all areas of the world, has created an impact on society. A person's thoughts or ideas, a groups common practice, or the societal norm spread more readily than ever before with the use of the internet. The results of a myriad of studies or experiments are also shared online. Access to material on the internet is quick and effective; however, studies have shown that there is a lack of retention while reading on the internet. Is easy access to information more important than retention?
The Internet has received a great deal of attention in the media lately due to its tremendous
One of the most widely used technologies is the Internet, or also known as the World Wide Web. “In August 1981 about 200 computers hosted Web servers. By July 1998 there were over 36 million Web servers, that are hosts to approximately 150 million people” (Strauss). The Internet proves to be very beneficial to education, since students have unlimited access to millions of websites with tons of information. There are only so many newspapers, journals and magazines that you can find in libraries or subscribe to. Therefore, the Internet offers an unlimited pile of information that students can always have. Moreover, students are enriched with the most current information in any subject, along with regular updates. Students are able to use the Internet anytime of day, as long as they have a computer at hand. The research process will not have to end when the school day is over (Wissick, 82).
Since the development of the Internet in late 1980s, communication has changed enormously. The Internet has altered the lives of people in the world in a way that was never imagined before. As little as a decade ago, if someone tried to explain the Internet and World Wide Web, it would have been difficult, if not impossible, to understand. Computers were just beginning to become popular and few individuals realized the capacity of one PC, let alone the power of a network of electronic technology. By linking together computers, users could remotely access others on the network, share information, and send electronic mail as easily as pushing a button. Millions of people with shared interests, exchange information and build communities through Web sites, email and instant-messaging software.
There has been a surprising change in society, which computer engineering has brought about . The Internet in particular is changing every activity of our daily lives. Today just about every advertisement on television, radio and in print carries a web address. It is not unusual for consumers to research a purchase on the Internet before buying. Websites offer thousands of pages of detailed information. Chat rooms and news groups attract many people with opinions t...