Java client 訪問 memcached

        在測試項目中引入了memcached做爲緩存層，如下是memcached的緩存配置和調用過程。

• linux下memcached安裝過程

             直接參考之前的博文  linux下安裝memcached過程   再也不詳細介紹

• java客戶端訪問memcached的jar包

             在2.6及之前版本使用的是java_memcached-release_2.6.3.jar，3.0以上版本使用memcached-Java-Client-3.0.2.jar，下載地址爲http://mvnrepository.com/artifact/com.whalin/Memcached-Java-Client。這兩個版本差別較大，官方說法是因爲danga的域名不屬於他們全部，因此如今修改了類包名稱。這是官方的wiki有相關的解釋：https://github.com/gwhalin/Memcached-Java-Client/wiki

• memcached-Java-Client的依賴包

             memcached-Java-Client-3.0.2.jar 須要如下一些包，

            一、commons-pool2-2.4.1.jar依賴包，下載地址http://mvnrepository.com/artifact/org.apache.commons/commons-pool2

            二、junit

            三、slf4j

• application-Context.xml中 配置支持memcached
  

 

	<bean id="memcachedPool" class="com.schooner.MemCached.SchoonerSockIOPool" 
		factory-method="getInstance" init-method="initialize">
		<constructor-arg>
			<value>neeaMemcachedPool</value>
		</constructor-arg>
		<property name="servers">
			<list>
				<value>memcached安裝的服務器ip地址:memcached的監聽端口</value>
			</list>
		</property>
		<property name="initConn">
			<value>20</value>
		</property>
		<property name="minConn">
			<value>10</value>
		</property>
		<property name="maxConn">
			<value>50</value>
		</property>
		<property name="nagle">
			<value>false</value>
		</property>
		<property name="socketTO">
			<value>3000</value>
		</property>
	</bean>
	
	<bean id="memcachedClient" class="com.whalin.MemCached.MemCachedClient">
		<constructor-arg>
			<value>neeaMemcachedPool</value>
		</constructor-arg>
	</bean>

 

• memcached操做類

 

public class Memcached {

	static MemCachedClient  cachedClient;
 
	private Memcached(){

	}
	
	public static void init()
	{
		ApplicationContext ctx = new FileSystemXmlApplicationContext("classpath:setup/applicationContext.xml"); 
		cachedClient = (MemCachedClient)ctx.getBean("memcachedClient"); 
		
	}
	
	public static Object get(String key) {
		return cachedClient.get(key);
	}
	
	public static boolean add(String key, Object value) {
		return cachedClient.add(key, value);
	}
	
	public static boolean add(String key, Object value, Integer expire) {
		return cachedClient.add(key, value, expire);
	}
	
	public static boolean set(String key, Object value) {
		return cachedClient.set(key, value);
	}
	
	public static boolean set(String key, Object value, Integer expire) {
		return cachedClient.set(key, value, expire);
	}
	
	public static boolean replace(String key, Object value) {
		return cachedClient.replace(key, value);
	}
	
	public static boolean replace(String key, Object value, Integer expire) {
		return cachedClient.replace(key, value, expire);
	}
	
	public static boolean delete(String key){
		return cachedClient.delete(key);
	}
}

 

• 調用測試

 

      Memcached.set("memcached", "測試");
      System.out.println("memcached緩存————————="+ Memcached.get("memcached"));