Test the memcached service on Ubuntu and windows

Refer:

Http://blog.csdn.net/lizhongkan/article/details/6033370

Http://brainfry.in/programming/memcached-java-examples/

For how to install the memcached service, see:

Install memcached on Ubuntu and windows

Put the Code directly:

Create a memcached connection class first. Make sure to enter the correct IP address and port of the memcached server.

import java.io.IOException;import java.net.InetSocketAddress;import java.util.concurrent.Future;import net.spy.memcached.MemcachedClient;public class MemClient {    private static MemcachedClient client = null;    static {        try {            client = new MemcachedClient(new InetSocketAddress("127.0.0.1",                    11211));            System.out.println("CONNECTED TO SERVER");        } catch (IOException e) {            e.printStackTrace();            System.exit(-1);        }    }    public Future<Boolean> addToMemCache(String key, int timeOut, Object val) {        Future<Boolean> future = client.set(key, timeOut, val);        return future;    }    public Object getMemcachedValue(String key) {        return client.get(key);    }}

Create another usage class. The basic principle is to randomly generate 100 pairs of key-value pairs and check whether all of them are saved. After the specified expire period, read the data to check whether the stored data is invalid.

import java.util.ArrayList;import java.util.Random;import java.util.concurrent.ExecutionException;import java.util.concurrent.Future;import java.util.logging.Level;import java.util.logging.Logger;public class MemClientUser {    private static ArrayList<String> keyStore = new ArrayList<String>();    private static ArrayList<Future<Boolean>> futures = new ArrayList<Future<Boolean>>();    private static int counter = 0;    public static void main(String[] args) throws InterruptedException,            ExecutionException {        Logger.getLogger("net.spy.memcached").setLevel(Level.SEVERE);        final MemClient memClient = new MemClient();        for (int i = 0; i < 100; i++) {            final String key = getRandomKey();            final String value = getValueFromASource();            keyStore.add(key);            Future<Boolean> future = memClient.addToMemCache(key, 10, value);            try {                future.get();            } catch (InterruptedException e) {                e.printStackTrace();            } catch (ExecutionException e) {                e.printStackTrace();            }            if (future != null) {                futures.add(future);                counter++;            } else                System.out.println("future is null??");        }        System.out.println("VALUES TRIED: " + counter);        counter = 0;        for (final String key : keyStore) {            String val = (String) memClient.getMemcachedValue(key);            if (val != null)                counter++;        }        System.out.println("VALUES FOUND: " + counter);        // This ensures the the values are expired        Thread.sleep(10000);        counter = 0;        for (final String key : keyStore) {            String val = (String) memClient.getMemcachedValue(key);            if (val != null)                counter++;        }        System.out.println("VALUES REMAINING: " + counter);    }    private static String getRandomKey() {        return "RANDOM_KEY" + new Random().nextInt(99999);    }    private static String getValueFromASource() {        // This function ideally would return a value from a database, or an API        // call        return "RANDOM_VALUE" + new Random().nextInt(99999);    }}

The test results are as follows: