Enhance Scalability In ASP.NET MVC Using Asynchronous Method

What is Asynchronous Method?
This method is used to call the function/method asynchronously. The asynchronous controller enables you to write down asynchronous action methods. That allowed you to perform the long-running operation(s) without making the running thread idle. It doesn't mean it'll take lesser time to finish the action. If an invitation makes a trip that needs two seconds to finish it, the request will take two seconds whether it's performed synchronously or asynchronously. This is one of the best features of Asp.Net MVC.

If the login method takes 5 seconds, it will cause the UI to freeze for 5 seconds. If you would like UI to remain responsive, you'd got to write asynchronous code. When the async keyword is added to a way definition, it tells the compiler that the tactic body can contain an await keyword.

Asynchronous programming Method has got to do with running some functions in your program (maybe JavaScript) without disrupting the operations or running of other functions and other things in your program if I'm right. I have never had time to revise this to offer you a concise definition and explanation. So, while your asynchronous functions or codes are running the opposite functions and codes keep it up running in their determined order. It won’t affect the other functions that are running synchronously.

In terms, async basically marks a method to be run asynchronously (meaning, it doesn't wait or have any sort of blocking with the main thread, hence you gain more responsiveness which is important when operations involving time run on the UI thread, causing it to block and show to a not responding message when a user tries interacting with it actually is only waiting for the operation to complete. With that little background about async out of the way, the async method is essentially wont to mark a way which must run asynchronously.

example: Public int async ReturnNumberAsync().

The caller now invoking the above async method should even be marked as async so as to use the await keyword to urge the result after execution. An Asynchronous method is represented by using an async modifier in the method signature.

Why we use Async Method in Asp.net?
Well, in fact, you would like to possess asynchronous action methods once you need a non-blocking responsive UI or your request to an action method has functionalities regarding IO operations or you are also providing options to cancel the long-running request. with the help of the Async Method, we can easily be done this task.

IIS Web server, the .Net framework manages the thread pool to process the ASP.NET service requests. At that time the server receives an invitation, it's assigned to a thread. If the thread processes the request in a synchronous manner, then it can't handle another request that has arrived.

Example of Async Method Stepwise

Here We are Perform the simple Program for the Understanding concept of Async Method

1. For creating a new ASP.Net C# Application go to the file menu and select the new project  give the appropriate name for project 
2.    First of all, the new project creation window pops up, we will select the ASP.Net Web Application C# Application and then select the MVC Checkbox then click on the Next button, you will get the below display.
 3.    Creating a simple Project Go to the Home controller and write a simple below code for understanding the concept of the Async Method. Async Method is

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Mvc;

namespace Async_Blog_Demo.Controllers
{
    public class AsynchronuosTestingController : AsyncController
    {
        private readonly object lck = new object();
        public void IndexAsync()
        {
            AsyncManager.OutstandingOperations.Increment(2);
            Op1();
            Op2();
        }
        public ActionResult IndexCompleted(string Op1, string Op2)
        {
            ViewData["Op1"] = Op1;
            ViewData["Op2"] = Op2;
            return View("Index");
        }
        void Op1()
        {
            lock (lck)
            {
                AsyncManager.Parameters["Op1"] = "Result1";
            }
            //last line of this method

            AsyncManager.OutstandingOperations.Decrement();
        }
        void Op2()
        {
            lock (lck)
            {
                AsyncManager.Parameters["Op2"] = "Result2";
            }
            //last line of this method

            AsyncManager.OutstandingOperations.Decrement();
        }
    }
}
 
4.     After Async Method Add empty view of the index method. 

@{
    Layout = null;
}
<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <div>
        <p>@ViewData["Op1"] </p>
        <p>@ViewData["Op2"]</p>
    </div>
</body>
</html>

5.    After adding index view just click on the run symbol, this program is run without any bug or error and you will get the output shown below.  Async Method will cause the UI to wait for 2 seconds.

Benefits of using Async method
- It helps application that can easily handle more users
- this is work with multiple I/O bound methods in parallel
-  It can make the UI interface more responsive for the users
- this is work with multiple and complex database calls that take seconds to return

Conclusion
With fabulous website security, Asp.Net MVC also provides enhanced scalability. Here, this blog gives you an idea to improve the extensibility in Asp.Net MVC using Asynchronous method. This method is very useful to manage multiple users simultaneously that can block the UI for some instance of time. Hereby, we had discussed how to create and execute a sample Async Method in a project and its benefits. We have also learned how to use Async method with an ASP.NET MVC application to test Await method.