/*
 * Example of using memcached from java - in this case using spymemcached client library from http://code.google.com/p/spymemcached/ 
 */

import java.io.IOException;
import java.io.PrintWriter;
import java.io.Serializable;
import java.net.InetSocketAddress;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.spy.memcached.MemcachedClient;

/**
 * Servlet implementation class Memcached
 */
public class Memcached extends HttpServlet {
	
	// data stored in memcached must be serializable 
	class DataBean implements Serializable {
		public DataBean(int i, String n) {id = i; name = n;}		
		public int id;
		public String name;
	}
	
	private static final long serialVersionUID = 1L;
       

    public Memcached() {
        super();
    }

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		MemcachedClient c=new MemcachedClient(new InetSocketAddress("localhost", 11211));
		PrintWriter out = response.getWriter();
		
		String key = "myKey";
		DataBean data = (DataBean) c.get(key);
		
		if (data == null) {
			data = new DataBean(10,"Test");
			c.set(key, 30, data);
			out.write("created new");
		} else {
			out.write("from memcached");
		}
	}

}