Application For Asynchronous Server Model

As a conclusion, Lighttpd is a high-quality web server that suitable for any websites with dynamic content. It is also an alternative web server which is easy to configure and efficient than the resource limited web servers.

Synchronous is an adjective that describes an event that is coordinated in time. Synchronous communications works in a way that both hosts will be communicating consistently to continue that communication. By this I mean, that there should be continuous stream of data flow between both hosts to keep that communication going. An example of this is a phone call, when one host (person) communicates with another host, both hosts will have an active connection between them during Synchronous communication. The first host can send a packet of data (talk) while the second host will receive that data (Listen) simultaneously and then the first host will receive the data while the second host is sending the data simultaneously. This communication is used commonly used in telecommunications such as; phone calls, Skype calls etc. Synchronous communication is used in these cases instead of Asynchronous because these things require both hosts be active at the same time. Synchronous communication is also used for things such as streaming on Netflix which requires both the server and client accessing Netflix to be active. Peer to peer transfer (sending a file directly to a friend over the internet) also requires that both hosts be active, if only one host was active then the file wouldn’t be able to be

i) Memory : cache server (holds recently acesed web pages in its RAM, for spedier aces

Ans: As thread is a shared one and it doesn’t store the data instead it shares the data. so Thread uses smaller resources than the process. A context should be created, that includes a register set storage location for Storage at the time of context switching, and a local stack for recording all the procedure call arguments, return values, return addresses, and thread-local storage. Creating a process results in the memory that is being allocated for instructions of program and data, as well as thread-like storage. Code may also be loaded into the allocated memory.

The server should keep track in stable storage (such as a disk log) information regarding what RPC operations were received, whether they were successfully performed, and the results associated with the operations. When a server crash takes place and a RPC message is received, the server can check whether the RPC had been previously performed and therefore guarantee “exactly once” semantics for the execution of RPCs.

In this thesis, focus on the security aspect of the client side, as well as in terms of the server, where the main objective of this security system to prevent attackers from exploiting the weaknesses of the client side because this would lead ultimately

The threads of the system need to communication and to be synchronized in a timely efficient and predictable way.

The aim of work is to provide service guarantees when multiple synchronous requests are present with high disk throughput. To address this problem we consider BFQ and modified versions of BFQ. It is found that MBFQV1 gives a better performance when compared with the BFQ. MBFQV2 is the suggested new disk scheduler which preserve both guarantees and a high throughput. In MBFQV2 we observed that the throughput, speed of transfer were better compared to the other schedulers for the normal size applications.

In web performance circles, “latency” is the amount of time it takes for the host server to receive and process a request for a page object. The amount of latency depends largely on how far away the user is from the server. For obvious reasons, tackling latency is a top priority for the performance industry. There are several ways to do this:

that uses the resources of the network. A user maybe defined as a someone "signed in"!

Here in the above diagram the consumers log into the website of chip ordering system through internet using a URL. The request is passed through the firewall and the request is endorsed by the web server which is in the DMZ. The request is passed to the middle-layer application server to provide the application logic. The application server is served by load balancing, upon

The summary of the collected data after completion of usability study states that among the 30 individuals around 56.6% people has used the manage blocking setting for the purpose of blocking the user’s/game requests/app requests etc. And around 43.3% of participants never used the manage blocking setting. While coming to the reason behind the usage most of the people stated that the major reason behind the usage of the setting is receiving the anonymous messages from the unknown people. And few of the people also stated that for ensuring privacy and few other stated that they ignored stated that they find usage as they are getting consequent message request from a specific individual and they felt irritated by the experience and find

Asyndeton proves the passage to be be something fun and enjoyable. “Brisket with bacon….”. This proves to be enjoyable because it's a whole bunch of food listed and most people love eating food or are very happy when they're eating it. “Airplanes, pinwheels…”. This ties into being fun because you could look into airplanes as traveling places, fireworks are just a symbol of fun or celebration. Same goes for everything else, the fair can be enjoyed just as much as everything listed.

When one executes something synchronously, one has to wait for it to be finished before moving on to another task. But if one executes something asynchronously, one can go on to another job before it finishes. Asynchronous pro-gramming is a means of parallel programming. A unit of task can be executed separately using multi-thread or some another method in asynchronos programming. A thread is a series of commands or block of code that exists as a unit of work.

It is an open- source framework and a server-side platform. It responds to actions generated by the user so it provides an event-driven environment. Node.js uses asynchronous programming which means that when a task is sent to the system, the server does not wait for API to return data and it does not even block it. Else, it gets ready to handle the request and moves to the next API, and when the file has been read (event) by the system, it responds to the client. Node.js does not support the buffering of data; it sends the output in chunks which makes it fast in executing the code as well as memory efficient.