如何在asp.net C#中的三个不同服务器之间传递数据

Question

I am using ASP.NET MVC with C# .There is a requirement in one of my project to pass data between three servers.

Below is detailed explanation of scenario:

1) There is Server 1 (Webserver) where website has been hosted through IIS.

2) Server1 send request to Server2

3) Server2 send response to Server3. (Server2 can't send response directly to server1)

4) Server3 pass response back to Server1.

How to handle case when there is connection break between server3 and server1 ?As in any case server1 redirection from server3 is mandatory to know current status.

More details: This project is related with shopping cart. Server1 is where website is hosted on IIS,customer select products and start payment process.Server2 is payment gateway(But as per client requirement payment gateway will not send response back to website ie server1, It will send response to another server ie server3).Server3 is redundant server and is connected with web server.It is hosted on IIS and used for getting response from payment gateway and pass it to Webserver. So Server3 acts as a interface between server 1 and server2.

Please guide me for best possible solution?

Answer 1

If you a loosely coupled communication style and also asyncronous then go for Queue and use Publish/Subscribe pattern.

Lets say you have a Queue named MessageingQueue and inside this queue there are 3 Topics

First one is Server1ToServer2 Second one is Server2ToServer3 Third one is Server3ToServer1

Server 1 will subscribe for messages on Server3ToServer1 Server 2 will subscribe for messages on Server1ToServer2 Server 3 will subscribe for messages on Server2ToServer3

Server 1 will send a message to Server1ToServer2 queue, Server 2 will pick it up and send a message to Server2ToServer3 topic which will be picked by server 3, and lastly server 3 will send the last response to Server3ToServer1