02.XMemcached的使用

public static void main(String[] args) throws IOException, TimeoutException, InterruptedException, MemcachedException
{
    MemcachedClientBuilder builder = new XMemcachedClientBuilder(AddrUtil.getAddresses("192.168.110.100:11211"));
    MemcachedClient client = builder.build();
    // set 命令用于将 value(数据值) 存储在指定的 key(键) 中
    System.out.println("set :" + client.set("key001", 3600, "value001"));
    // add 命令用于将 value(数据值) 存储在指定的 key(键) 中
    System.out.println("add :" + client.add("key002", 3600, "value002"));
    // replace 命令用于替换已存在的 key(键) 的 value(数据值)
    System.out.println("replace :" + client.replace("key002", 3600, "value003"));
    // append 命令用于向已存在 key(键) 的 value(数据值) 后面追加数据
    System.out.println("append :" + client.append("key002", "value004"));
    // prepend 命令用于向已存在 key(键) 的 value(数据值) 前面追加数据
    System.out.println("prepend :" + client.prepend("key002", "value005"));
    // CAS 命令用于执行一个"检查并设置"的操作它仅在当前客户端最后一次取值后，该key 对应的值没有被其他客户端修改的情况下， 才能够将值写入
    GetsResponse<String> result = client.gets("key002");
    long cas = result.getCas();
    System.out.println("cas :" + client.cas("key002", 3600, "value002", cas));
    // get 命令获取存储在 key(键) 中的 value(数据值) ，如果 key 不存在，则返回空
    System.out.println("get :" + client.get("key001"));
    // gets 命令获取带有 CAS 令牌存 的 value(数据值) ，如果 key 不存在，则返回空
    System.out.println("gets :" + client.gets("key002"));
    // delete 命令用于删除已存在的 key(键)
    System.out.println("delete :" + client.delete("key002"));
    // incr 与 decr 命令用于对已存在的 key(键) 的数字值进行自增或自减操作
    System.out.println("incr :" + client.incr("key002", 1L));
    // stats 命令用于返回统计信息例如 PID(进程号)、版本号、连接数等
    System.out.println("stats :" + client.stats(new InetSocketAddress("192.168.110.100", 11211)));
    System.out.println("getStats :" + client.getStats());
    // stats items 命令用于显示各个 slab 中 item 的数目和存储时长(最后一次访问距离现在的秒数)
    System.out.println("getStatsByItem items :" + client.getStatsByItem("items"));
    // stats slabs 命令用于显示各个slab的信息，包括chunk的大小、数目、使用情况等
    System.out.println("getStatsByItem slabs :" + client.getStatsByItem("slabs"));
    // stats sizes 命令用于显示所有item的大小和个数
    System.out.println("getStatsByItem sizes :" + client.getStatsByItem("sizes"));
    // flush_all 命令用于用于清理缓存中的所有 key=>value(键=>值) 对
    client.flushAll();
    System.out.println("OK!!!");
    client.shutdown();
}

public static void main(String[] args) throws IOException, TimeoutException, InterruptedException, MemcachedException
{
    // 集群服务器地址
    String server = "192.168.110.100:11211 192.168.110.101:11211 192.168.110.102:11211 192.168.110.103:11211";
    // 设置权重
    int[] weights = new int[] { 1, 2, 3, 4 };
    MemcachedClientBuilder builder = new XMemcachedClientBuilder(AddrUtil.getAddresses(server), weights);
    // 客户端集群算法：一致性哈希。默认是：按照key的哈希值模以连接数得到的余数
    builder.setSessionLocator(new KetamaMemcachedSessionLocator());
    MemcachedClient client = builder.build();
    // 返回可用的memcached服务器列表
    System.out.println(client.getAvailableServers());
    
    for (int i = 0; i < 100; i++)
    {
        System.out.print(client.set("key-" + i, 3600, "value-" + i) + "-");
    }
    
    System.out.println("\nOK!!!");
    client.shutdown();
}

public static void main(String[] args) throws IOException, InterruptedException
{
    MemcachedClientBuilder builder = new XMemcachedClientBuilder();
    MemcachedClient client = builder.build();
    System.out.println(client.getAvailableServers());
    
    client.addServer("192.168.110.100", 11211, 1);
    client.addServer("192.168.110.101", 11211, 2);
    client.addServer("192.168.110.102", 11211, 3);
    client.addServer("192.168.110.103", 11211, 4);
    System.out.println(client.getAvailableServers());
    
    client.removeServer("192.168.110.102:11211 192.168.110.103:11211");
    Thread.sleep(100); // 由于xmemcached是多线程操作，所以休眠一段时间才能看到效果
    System.out.println(client.getAvailableServers());
    
    System.out.println("OK!!!");
    client.shutdown();
}

public static void main(String[] args) throws IOException
{
    MemcachedClientBuilder builder = new XMemcachedClientBuilder(AddrUtil.getAddresses("192.168.110.100:11211"));
    // 设置客户端集群的算法实现
    builder.setSessionLocator(new KetamaMemcachedSessionLocator());
    // 使用二进制协议
    builder.setCommandFactory(new BinaryCommandFactory());
    // Nio连接池
    builder.setConnectionPoolSize(5);
    // Failure模式和standby节点
    builder.setFailureMode(true);
    // 与tokyotyrant交互
    builder.setTranscoder(new TokyoTyrantTranscoder());
    MemcachedClient memcachedClient = builder.build();
    memcachedClient.shutdown();
}

MemcachedClient builder=new XmemcachedClientBuilder(AddrUtil.getAddressMap("localhost:11211,localhost:11212 host2:11211,host2:11212"));

<!-- Memcached客户端工厂配置 -->
<bean name="memcachedClient" class="net.rubyeye.xmemcached.utils.XMemcachedClientFactoryBean" destroy-method="shutdown">
    <!-- Memcached的服务器集群 -->
    <property name="servers">
        <!-- <value>host1:port1 host2:port2 host3:port3</value> -->
        <value>${memcached.host1}</value>
    </property>
    <!-- 客户端节点权重设置，对应上面的servers配置 -->
    <property name="weights">
        <list>
            <value>${memcached.host1.weight}</value>
        </list>
    </property>
    <!-- 设置连接池的大小 -->
    <property name="connectionPoolSize" value="2"></property>
    <!-- 使用二进制协议通讯，默认为TextCommandFactory -->
    <property name="commandFactory">
        <bean class="net.rubyeye.xmemcached.command.BinaryCommandFactory"></bean>
    </property>
    <!-- 分布式策略 -->
    <property name="sessionLocator">
        <bean class="net.rubyeye.xmemcached.impl.KetamaMemcachedSessionLocator"></bean>
    </property>
    <!-- 序列化转码器 -->
    <property name="transcoder">
        <bean class="net.rubyeye.xmemcached.transcoders.SerializingTranscoder" />
    </property>
    <!-- 缓冲区分配器 -->
    <property name="bufferAllocator">
        <bean class="net.rubyeye.xmemcached.buffer.SimpleBufferAllocator"></bean>
    </property>
    
    <!-- 设置验证信息 -->
<!-- 		
    <property name="authInfoMap">
        <map>
            <entry key-ref="server1">
                <bean class="net.rubyeye.xmemcached.auth.AuthInfo" factory-method="typical">
                    <constructor-arg index="0">
                        <value>index</value>
                    </constructor-arg>
                    <constructor-arg index="1">
                        <value>index-pd</value>
                    </constructor-arg>
                </bean>
            </entry>
        </map>
    </property> 
-->
</bean>

@Autowired
@Qualifier("memcachedClient")
private MemcachedClient memcachedClient;