Ahmed Fouad

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[ahmedfouadtest-blog]

Introduction to Web Workers

The Idea of web workers is similar to the multithreading idea as a web worker is a piece of java script code that run on background and have no access to the DOM objects. These will allow the web app to minimize the response time of any action as the developer should put the code that take long time in a separate web workers in order to run these workers in a concurrent execution mode.

Web Workers communicate with the main document throat Messages.

check this code sample to know how to use web workers in js

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Asynchronous Programming Model in Windows 8

At current days where we are in the post PC time , the performance of the modern apps is measured with the response time. A good app is an app that is real time interactive with user, not loading time , no hangs. These constrains Importance have increased due to the new touch experience as in touch experience it is unbearable that the user screen become looked due to some process in the background.  So in order to be able to build a low response time apps the Async Programming is introduced and in the upcoming few lines of this article , we will discuss it.

Async Methods and Await keywords

Async Methods are new methods introduced with .net 4.5 that have a return type of type Task<T>.

For Example 

public async Task<string> MethodName ()

{

return "HelloAsync";

}

This Async method will be called asynchronously from another asynchronous method and in order to get the result sting , you will need to use the await operator.

For Example

public async void OtherMethod()

{

var Task1= MethodName();

IndependentWork();

string result = await Task1;

}