Java的Memcached客户端
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1.memcached client for java
http://www.whalin.com/memcached
2.spymemcached
http://code.google.com/p/spymemcached/
用spymemcached将对象存入缓存
用spymemcached从缓存中取得对象
以上两种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.
3. Xmemcached
http://code.google.com/p/xmemcached/
Xmemcached是基于java nio实现的高性能可扩展的memcached客户端。
实际上是基于我实现的一个nio框架 http://code.google.com/p/yanf4j/的基础上实现的(目前1.1.3是基于yanf4j 0.7.0,而1.2.0-RC1版本基于1.0-SNAPSHOT)。
http://www.whalin.com/memcached
- 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));
- }
- }
- }
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
http://code.google.com/p/spymemcached/
用spymemcached将对象存入缓存
- 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();
- }
- }
- }
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
- 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();
- }
- }
- }
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(); } }}
以上两种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.
3. Xmemcached
http://code.google.com/p/xmemcached/
引用
Xmemcached是基于java nio实现的高性能可扩展的memcached客户端。
实际上是基于我实现的一个nio框架 http://code.google.com/p/yanf4j/的基础上实现的(目前1.1.3是基于yanf4j 0.7.0,而1.2.0-RC1版本基于1.0-SNAPSHOT)。
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