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| <li><a href="ch2.1.1-server-architecture.html">2.1.1 - Server Architecture</a></li> |
| <li><a href="ch2.1.2-client-architecture.html">2.1.2 - Client Architecture</a></li> |
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| <h1 id="21----mina-based-application-architecture">2.1 - MINA based Application Architecture</h1> |
| <p>It’s the question most asked: ‘How does a <strong>MINA</strong> based application look like’? In this article lets see what’s the architecture of MINA based application. Have tried to gather the information from presentations based on <strong>MINA</strong>.</p> |
| <p>A Bird’s Eye View:</p> |
| <p><img src="/assets/img/mina/apparch_small.png" alt=""></p> |
| <p>Here, we can see that <strong>MINA</strong> is the glue between your application (be it a client or a server) and the underlying network layer, which can be based on TCP, UDP, in-VM communication or even a RS-232C serial protocol for a client.</p> |
| <p>You just have to design your application on top of MINA without having to handle all the complexity of the network layer.</p> |
| <p>Lets take a deeper dive into the details now. The following image shows a bit more the internal of <strong>MINA</strong>, and what are each of the <strong>MINA</strong> components doing:</p> |
| <p><img src="/assets/img/mina/mina_app_arch.png" alt=""></p> |
| <p>(The image is from Emmanuel Lécharny presentation <a href="/assets/pdfs/Mina_in_real_life_ASEU-2009.pdf">MINA in real life (ApacheCon EU 2009)</a>)</p> |
| <p>Broadly, MINA based applications are divided into 3 layers</p> |
| <ul> |
| <li>I/O Service - Performs actual I/O</li> |
| <li>I/O Filter Chain - Filters/Transforms bytes into desired Data Structures and vice-versa</li> |
| <li>I/O Handler - Here resides the actual business logic</li> |
| </ul> |
| <p>So, in order to create a MINA based Application, you have to:</p> |
| <ol> |
| <li>Create an I/O service - Choose from already available Services (<em>Acceptor</em>) or create your own</li> |
| <li>Create a Filter Chain - Choose from already existing Filters or create a custom Filter for transforming request/response</li> |
| <li>Create an I/O Handler - Write business logic, on handling different messages</li> |
| </ol> |
| <p>This is pretty much it.</p> |
| <p>You can get a bit deeper by reading those two pages:</p> |
| <ul> |
| <li><a href="ch2.1.1-server-architecture.html">2.1.1 - Server Architecture</a></li> |
| <li><a href="ch2.1.2-client-architecture.html">2.1.2 - Client Architecture</a></li> |
| </ul> |
| <p>Of course, <strong>MINA</strong> offers more than just that, and you will probably have to take care of many other aspects, like the messages encoding/decoding, the network configuration how to scale up, etc… We will have a further look at those aspects in the next chapters.</p> |
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