Hibernate-memcached是CacheProvider接口的memcached实现

步骤：

one：下载和安装运行memcache服务器程序 即：memcache.exe        下载到c：\      

two:增加Hibernate-memcached的相关类库

包括：memcached-2.1.jar 

　　　spy-2.4.jar 

　　　commons-codec-1.3.jar

three:修改hibernate.cfg.xml文件

four：测试Hibernate-memcached

Hibernate.java

代码：

<?xml version='1.0' encoding='UTF-8'?>

<!DOCTYPE hibernate-configuration PUBLIC

          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

          "">

 <!-- Generated by MyEclipse Hibernate Tools.                   -->

<hibernate-configuration>

<session-factory>

 <property name="dialect">

  org.hibernate.dialect.MySQLDialect

 </property>

 <property name="connection.url">

  jdbc:mysql://localhost:3307/users

 </property>

 <property name="connection.username">root</property>

 <property name="connection.password">root</property>

 <property name="connection.driver_class">

  com.mysql.jdbc.Driver

 </property>

 <property name="myeclipse.connection.profile">mysqlusers</property>

 <property name="show_sql">true</property>

 <property name="format_sql">true</property>

 <property name="current_session_context_class">thread</property>

 <property name="cache.provider_class">

  com.googlecode.hibernate.memcached.MemcachedCacheProvider

 </property>

 <property name="ibernate.cache.use_query_cache">true</property>

 <mapping resource="com/b510/examplex/Category.hbm.xml" />

 <mapping resource="com/b510/examplex/Product.hbm.xml" />

</session-factory>

</hibernate-configuration>

HibernateTest.java

代码：

/**

 *

 */

package com.b510.examplex;

import java.util.List;

import org.hibernate.Query;

import org.hibernate.Session;

/**

 *

 * @author XHW

 *

 * @date 2011-7-17

 *

 */

public class HibernateTest {

 public static void main(String[] args) {

  new HibernateTest().test();

 }

 public void test(){

  Session session=HibernateSessionFactoryUtil.getSessionFactory().openSession();

  session.beginTransaction();

  Query query=session.createQuery("from Product");

  //查询

  query.setCacheable(true);

  List<Product> list=query.list();

  for(Product p:list){

   System.out.println(p.getName());

  }

  Query query2=session.createQuery("from Product");

  List<Product> list2=query.list();

  for(Product p2:list2){

   System.out.println(p2.getName());

  }

  session.getTransaction().commit();

 }

}

运行结果：

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).

log4j:WARN Please initialize the log4j system properly.

31 [main] INFO com.googlecode.hibernate.memcached.MemcachedCacheProvider - Starting MemcachedClient...

2011-07-17 22:15:34.015 INFO net.spy.memcached.MemcachedConnection:  Added {QA sa=localhost/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue

2011-07-17 22:15:34.031 INFO net.spy.memcached.MemcachedConnection:  Connection state changed for

140 [main] INFO com.googlecode.hibernate.memcached.MemcachedCacheProvider - Building cache for region [com.b510.examplex.Category]

265 [main] INFO com.googlecode.hibernate.memcached.MemcachedCacheProvider - Building cache for region [com.b510.examplex.Category.products]

Hibernate:

    select

        product0_.id as id1_,

        product0_.category_id as category2_1_,

        product0_.name as name1_,

        product0_.price as price1_,

        product0_.descripton as descripton1_

    from

        users.product product0_

java SE应用程序设计

java WEB开发与实战

Hibernate:

    select

        product0_.id as id1_,

        product0_.category_id as category2_1_,

        product0_.name as name1_,

        product0_.price as price1_,

        product0_.descripton as descripton1_

    from

        users.product product0_

java SE应用程序设计

java WEB开发与实战

注意：下面这步应该最先

 运行-->cmd-->cd\     回车-->memcached -vv         

显示结果：

Microsoft Windows XP [版本 5.1.2600]

(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ed\

'ed\' 不是内部或外部命令，也不是可运行的程序

或批处理文件。

C:\Documents and Settings\Administrator>cd\

C:\>memcached -vv

slab class   1: chunk size     80 perslab 13107

slab class   2: chunk size    100 perslab 10485

slab class   3: chunk size    128 perslab  8192

slab class   4: chunk size    160 perslab  6553

slab class   5: chunk size    200 perslab  5242

slab class   6: chunk size    252 perslab  4161

slab class   7: chunk size    316 perslab  3318

slab class   8: chunk size    396 perslab  2647

slab class   9: chunk size    496 perslab  2114

slab class  10: chunk size    620 perslab  1691

slab class  11: chunk size    776 perslab  1351

slab class  12: chunk size    972 perslab  1078

slab class  13: chunk size   1216 perslab   862

slab class  14: chunk size   1520 perslab   689

slab class  15: chunk size   1900 perslab   551

slab class  16: chunk size   2376 perslab   441

slab class  17: chunk size   2972 perslab   352

slab class  18: chunk size   3716 perslab   282

slab class  19: chunk size   4648 perslab   225

slab class  20: chunk size   5812 perslab   180

slab class  21: chunk size   7268 perslab   144

slab class  22: chunk size   9088 perslab   115

slab class  23: chunk size  11360 perslab    92

slab class  24: chunk size  14200 perslab    73

slab class  25: chunk size  17752 perslab    59

slab class  26: chunk size  22192 perslab    47

slab class  27: chunk size  27740 perslab    37

slab class  28: chunk size  34676 perslab    30

slab class  29: chunk size  43348 perslab    24

slab class  30: chunk size  54188 perslab    19

slab class  31: chunk size  67736 perslab    15

slab class  32: chunk size  84672 perslab    12

slab class  33: chunk size 105840 perslab     9

slab class  34: chunk size 132300 perslab     7

slab class  35: chunk size 165376 perslab     6

slab class  36: chunk size 206720 perslab     5

slab class  37: chunk size 258400 perslab     4

slab class  38: chunk size 323000 perslab     3

slab class  39: chunk size 403752 perslab     2

slab class  40: chunk size 504692 perslab     2

<1944 server listening

<1928 new client connection

<1920 new client connection

<1908 new client connection

<1896 new client connection