JAVA客户端调用memcached比较

1.memcached client for java
客户端API：memcached client for java

网址：http://www.whalin.com/memcached

最新版本：java_memcached-release_2.0.1

操作示例：

Java代码

import com.danga.MemCached.*; import org.apache.log4j.*; public class TestMemcached { public static void main(String[] args) { /*初始化SockIOPool，管理memcached的连接池*/ String[] servers = { "192.168.1.20:12111" }; SockIOPool pool = SockIOPool.getInstance(); pool.setServers(servers); pool.setFailover(true); pool.setInitConn(10); pool.setMinConn(5); pool.setMaxConn(250); pool.setMaintSleep(30); pool.setNagle(false); pool.setSocketTO(3000); pool.setAliveCheck(true); pool.initialize(); /*建立MemcachedClient实例*/ MemCachedClient memCachedClient = new MemCachedClient(); for (int i = 0; i < 10; i++) { /*将对象加入到memcached缓存*/ boolean success = memCachedClient.set("" + i, "Hello!"); /*从memcached缓存中按key值取对象*/ String result = (String) memCachedClient.get("" + i); System.out.println(String.format("set( %d ): %s", i, success)); System.out.println(String.format("get( %d ): %s", i, result)); } } }

2.spymemcached

客户端API：spymemcached client

网址：http://code.google.com/p/spymemcached/

最新版本：memcached-2.1.jar

操作示例：用spymemcached将对象存入缓存

Java代码

import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MClient { public static void main(String[] args){ try{ /*建立MemcachedClient 实例，并指定memcached服务的IP地址和端口号*/ MemcachedClient mc = new MemcachedClient(new InetSocketAddress("192.168.1.20", 12111)); Future<Boolean> b = null; /*将key值，过期时间(秒)和要缓存的对象set到memcached中*/ b = mc.set("neea:testDaF:ksIdno", 900, "someObject"); if(b.get().booleanValue()==true){ mc.shutdown(); } } catch(Exception ex){ ex.printStackTrace(); } } }

用spymemcached从缓存中取得对象

Java代码

import java.net.InetSocketAddress; import java.util.concurrent.Future; import net.spy.memcached.MemcachedClient; public class MClient { public static void main(String[] args){ try{ /*建立MemcachedClient 实例，并指定memcached服务的IP地址和端口号*/ MemcachedClient mc = new MemcachedClient(new InetSocketAddress("192.168.1.20", 12111)); /*按照key值从memcached中查找缓存，不存在则返回null */ Object b = mc.get("neea:testDaF:ksIdno "); mc.shutdown(); } catch(Exception ex){ ex.printStackTrace(); } } }

3.两种API比较

memcached client for java：较早推出的memcached JAVA客户端API，应用广泛，运行比较稳定。

spymemcached：A simple， asynchronous， single-threaded memcached client written in java. 支持异步，单线程的memcached客户端，用到了java1.5版本的concurrent和nio，存取速度会高于前者，但是稳定性不好，测试中常报timeOut等相关异常。

由于memcached client for java发布了新版本，性能上有所提高，并且运行稳定，所以建议使用memcached client for java.

原文链接: http://java.chinaitlab.com/base/...