Scalability

When the demand on a server increases and decreases, it is desirable to change the resources dedicated to the server. The options available range from the use of manual threads to allow concurrent behavior to those embedded in specialized classes to handle thread pools and NIO channels.

Creating a threaded server

In this section, we will use threads to augment our simple echo server. The definition of the ThreadedEchoServer class is as follows. It implements the Runnable interface to create a new thread for each connection. The private Socket variable will hold the client socket for a specific thread:

public class ThreadedEchoServer implements Runnable { private static Socket clientSocket; public ThreadedEchoServer(Socket clientSocket) ...

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