Memcached笔记——（二）XMemcached&Spring集成

今天研究Memcached的Java的Client，使用XMemcached 1.3.5，做个简单的测试，并介绍如何与Spring集成。

相关链接：
Memcached笔记——（一）安装&常规错误&监控
Memcached笔记——（二）XMemcached&Spring集成
Memcached笔记——（三）Memcached使用总结
Memcached笔记——（四）应对高并发攻击


一、Memcached Client简要介绍
Memcached Client目前有3种：

这三种Client一直存在各种争议：
  • Memcached Client for Java 比 SpyMemcached更稳定、更早、更广泛；
  • SpyMemcached 比 Memcached Client for Java更高效；
  • XMemcached 比 SpyMemcache并发效果更好。


用数据来说话，参考官方性能对比：
Memcached Client for Java：https://github.com/gwhalin/Memcached-Java-Client/wiki/PERFORMANCE
XMemcached：http://xmemcached.googlecode.com/svn/trunk/benchmark/benchmark.html

二、XMemcached特性
XMemcached特性：
  • 高性能
  • 支持完整的memcached文本协议,二进制协议。
  • 支持JMX，可以通过MBean调整性能参数、动态添加/移除server、查看统计等。
  • 支持客户端统计
  • 支持memcached节点的动态增减。
  • 支持memcached分布:余数分布和一致性哈希分布。
  • 更多的性能调整选项。

此外，XMemcached更容易与Spring集成。而且，属于中国原创！

三、XMemcached简单实现

MemcachedClientBuilder是MemcachedClient核心接口，用来控制Client的构建（build()方法）和关闭（shutdown()方法）。
XMemcachedClientBuilder一般通过构造方法配置地址列表，通常还要配置权重，代码如下：
Java代码 复制代码 收藏代码
  1. public XMemcachedClientBuilder(List<InetSocketAddress> addressList) {
  2. if (addressList != null) {
  3. for (InetSocketAddress addr : addressList) {
  4. this.addressMap.put(addr, null);
  5. }
  6. }
  7. }
  9. public XMemcachedClientBuilder(List<InetSocketAddress> addressList,
  10. int[] weights) {
  11. if (addressList != null) {
  12. for (InetSocketAddress addr : addressList) {
  13. this.addressMap.put(addr, null);
  14. }
  15. }
  16. this.weights = weights;
  17. } 
	public XMemcachedClientBuilder(List<InetSocketAddress> addressList) {
		if (addressList != null) {
			for (InetSocketAddress addr : addressList) {
				this.addressMap.put(addr, null);
			}
		}
	}

	public XMemcachedClientBuilder(List<InetSocketAddress> addressList,
			int[] weights) {
		if (addressList != null) {
			for (InetSocketAddress addr : addressList) {
				this.addressMap.put(addr, null);
			}
		}
		this.weights = weights;
	}

不过这哥们如果用this()可以省点代码， 还有给加点注释吧！
此外，还需要设置连接池大小，使用二进制协议/文本协议等。
通过build()方法获得MemcachedClient
然后就可以通过Memcached进行set、get、replace、delete等Memcached操作了！
上代码：
Java代码 复制代码 收藏代码
  1. import static junit.framework.Assert.*;
  3. import java.io.IOException;
  4. import java.util.concurrent.TimeoutException;
  6. import net.rubyeye.xmemcached.MemcachedClient;
  7. import net.rubyeye.xmemcached.MemcachedClientBuilder;
  8. import net.rubyeye.xmemcached.XMemcachedClientBuilder;
  9. import net.rubyeye.xmemcached.command.BinaryCommandFactory;
  10. import net.rubyeye.xmemcached.exception.MemcachedException;
  11. import net.rubyeye.xmemcached.utils.AddrUtil;
  13. import org.junit.Test;
  15. public class MemcachedClientTest {
  16. @Test
  17. public void test() {
  18. MemcachedClientBuilder builder = new XMemcachedClientBuilder(
  19. AddrUtil.getAddresses("10.11.155.26:11211 10.11.155.41:11211 10.10.76.31:11211 10.10.76.35:11211"),
  20. new int[] { 1, 1, 1, 1 });
  22. // 设置连接池大小，即客户端个数
  23. builder.setConnectionPoolSize(50);
  25. // 宕机报警
  26. builder.setFailureMode(true);
  28. // 使用二进制文件
  29. builder.setCommandFactory(new BinaryCommandFactory());
  31. MemcachedClient memcachedClient = null;
  32. try {
  33. memcachedClient = builder.build();
  34. try {
  35. // 设置/获取
  36. memcachedClient.set("zlex", 36000, "set/get");
  37. assertEquals("set/get", memcachedClient.get("zlex"));
  39. // 替换
  40. memcachedClient.replace("zlex", 36000, "replace");
  41. assertEquals("replace", memcachedClient.get("zlex"));
  43. // 移除
  44. memcachedClient.delete("zlex");
  45. assertNull(memcachedClient.get("zlex"));
  46. } catch (TimeoutException e) {
  47. // TODO Auto-generated catch block
  48. e.printStackTrace();
  49. } catch (InterruptedException e) {
  50. // TODO Auto-generated catch block
  51. e.printStackTrace();
  52. } catch (MemcachedException e) {
  53. // TODO Auto-generated catch block
  54. e.printStackTrace();
  55. }
  57. } catch (IOException e) {
  58. // TODO Auto-generated catch block
  59. e.printStackTrace();
  60. } finally {
  61. if (memcachedClient != null) {
  62. try {
  63. memcachedClient.shutdown();
  64. } catch (IOException e) {
  65. // TODO Auto-generated catch block
  66. e.printStackTrace();
  67. }
  68. }
  69. }
  70. }
  71. } 
import static junit.framework.Assert.*;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

import net.rubyeye.xmemcached.MemcachedClient;
import net.rubyeye.xmemcached.MemcachedClientBuilder;
import net.rubyeye.xmemcached.XMemcachedClientBuilder;
import net.rubyeye.xmemcached.command.BinaryCommandFactory;
import net.rubyeye.xmemcached.exception.MemcachedException;
import net.rubyeye.xmemcached.utils.AddrUtil;

import org.junit.Test;

public class MemcachedClientTest {
	@Test
	public void test() {
		MemcachedClientBuilder builder = new XMemcachedClientBuilder(
				AddrUtil.getAddresses("10.11.155.26:11211 10.11.155.41:11211 10.10.76.31:11211 10.10.76.35:11211"),
				new int[] { 1, 1, 1, 1 });
		
		// 设置连接池大小，即客户端个数
		builder.setConnectionPoolSize(50);

		// 宕机报警
		builder.setFailureMode(true);

		// 使用二进制文件
		builder.setCommandFactory(new BinaryCommandFactory());

		MemcachedClient memcachedClient = null;
		try {
			memcachedClient = builder.build();
			try {
				// 设置/获取
				memcachedClient.set("zlex", 36000, "set/get");
				assertEquals("set/get", memcachedClient.get("zlex"));

				// 替换
				memcachedClient.replace("zlex", 36000, "replace");
				assertEquals("replace", memcachedClient.get("zlex"));

				// 移除
				memcachedClient.delete("zlex");
				assertNull(memcachedClient.get("zlex"));
			} catch (TimeoutException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (MemcachedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			if (memcachedClient != null) {
				try {
					memcachedClient.shutdown();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}

四、XMemcached与Spring集成
XMemcached与Spring集成可以参考http://code.google.com/p/xmemcached/wiki/Spring_Integration，这里只说最常用的方法。
memcached.properties做基本配置：
Properties代码 复制代码 收藏代码
  1. #连接池大小即客户端个数
  2. memcached.connectionPoolSize=50
  3. memcached.failureMode=true
  4. #server1
  5. memcached.server1.host=10.11.155.26
  6. memcached.server1.port=11211
  7. memcached.server1.weight=4
  8. #server2
  9. memcached.server2.host=10.11.155.41
  10. memcached.server2.port=11211
  11. memcached.server2.weight=3
  12. #server3
  13. memcached.server3.host=10.10.76.31
  14. memcached.server3.port=11211
  15. memcached.server3.weight=2
  16. #server4
  17. memcached.server4.host=10.10.76.35
  18. memcached.server4.port=11211
  19. memcached.server4.weight=1 
#连接池大小即客户端个数
memcached.connectionPoolSize=50
memcached.failureMode=true
#server1
memcached.server1.host=10.11.155.26
memcached.server1.port=11211
memcached.server1.weight=4
#server2
memcached.server2.host=10.11.155.41
memcached.server2.port=11211
memcached.server2.weight=3				
#server3
memcached.server3.host=10.10.76.31
memcached.server3.port=11211
memcached.server3.weight=2					
#server4
memcached.server4.host=10.10.76.35
memcached.server4.port=11211
memcached.server4.weight=1

XML配置文件：
Xml代码 复制代码 收藏代码
  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <beans
  3. xmlns="http://www.springframework.org/schema/beans"
  4. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  5. xmlns:context="http://www.springframework.org/schema/context"
  6. xmlns:p="http://www.springframework.org/schema/p"
  7. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
  8. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
  9. <!-- http://code.google.com/p/xmemcached/wiki/Spring_Integration -->
  10. <context:property-placeholder location="memcached.properties" />
  11. <bean
  12. id="memcachedClientBuilder"
  13. class="net.rubyeye.xmemcached.XMemcachedClientBuilder"
  14. p:connectionPoolSize="${memcached.connectionPoolSize}"
  15. p:failureMode="${memcached.failureMode}">
  16. <!-- XMemcachedClientBuilder have two arguments.First is server list,and
  17. second is weights array. -->
  18. <constructor-arg>
  19. <list>
  20. <bean class="java.net.InetSocketAddress">
  21. <constructor-arg>
  22. <value>${memcached.server1.host}</value>
  23. </constructor-arg>
  24. <constructor-arg>
  25. <value>${memcached.server1.port}</value>
  26. </constructor-arg>
  27. </bean>
  28. <bean class="java.net.InetSocketAddress">
  29. <constructor-arg>
  30. <value>${memcached.server2.host}</value>
  31. </constructor-arg>
  32. <constructor-arg>
  33. <value>${memcached.server2.port}</value>
  34. </constructor-arg>
  35. </bean>
  36. <bean class="java.net.InetSocketAddress">
  37. <constructor-arg>
  38. <value>${memcached.server3.host}</value>
  39. </constructor-arg>
  40. <constructor-arg>
  41. <value>${memcached.server3.port}</value>
  42. </constructor-arg>
  43. </bean>
  44. <bean class="java.net.InetSocketAddress">
  45. <constructor-arg>
  46. <value>${memcached.server4.host}</value>
  47. </constructor-arg>
  48. <constructor-arg>
  49. <value>${memcached.server4.port}</value>
  50. </constructor-arg>
  51. </bean>
  52. </list>
  53. </constructor-arg>
  54. <constructor-arg>
  55. <list>
  56. <value>${memcached.server1.weight}</value>
  57. <value>${memcached.server2.weight}</value>
  58. <value>${memcached.server3.weight}</value>
  59. <value>${memcached.server4.weight}</value>
  60. </list>
  61. </constructor-arg>
  62. <property name="commandFactory">
  63. <bean class="net.rubyeye.xmemcached.command.TextCommandFactory" />
  64. </property>
  65. <property name="sessionLocator">
  66. <bean class="net.rubyeye.xmemcached.impl.KetamaMemcachedSessionLocator" />
  67. </property>
  68. <property name="transcoder">
  69. <bean class="net.rubyeye.xmemcached.transcoders.SerializingTranscoder" />
  70. </property>
  71. </bean>
  72. <!-- Use factory bean to build memcached client -->
  73. <bean
  74. id="memcachedClient"
  75. factory-bean="memcachedClientBuilder"
  76. factory-method="build"
  77. destroy-method="shutdown" />
  78. </beans> 
<?xml version="1.0" encoding="UTF-8"?>
<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
	<!-- http://code.google.com/p/xmemcached/wiki/Spring_Integration -->
	<context:property-placeholder location="memcached.properties" />
	<bean
		id="memcachedClientBuilder"
		class="net.rubyeye.xmemcached.XMemcachedClientBuilder"
		p:connectionPoolSize="${memcached.connectionPoolSize}"
		p:failureMode="${memcached.failureMode}">
		<!-- XMemcachedClientBuilder have two arguments.First is server list,and 
			second is weights array. -->
		<constructor-arg>
			<list>
				<bean class="java.net.InetSocketAddress">
					<constructor-arg>
						<value>${memcached.server1.host}</value>
					</constructor-arg>
					<constructor-arg>
						<value>${memcached.server1.port}</value>
					</constructor-arg>
				</bean>
				<bean class="java.net.InetSocketAddress">
					<constructor-arg>
						<value>${memcached.server2.host}</value>
					</constructor-arg>
					<constructor-arg>
						<value>${memcached.server2.port}</value>
					</constructor-arg>
				</bean>
				<bean class="java.net.InetSocketAddress">
					<constructor-arg>
						<value>${memcached.server3.host}</value>
					</constructor-arg>
					<constructor-arg>
						<value>${memcached.server3.port}</value>
					</constructor-arg>
				</bean>
				<bean class="java.net.InetSocketAddress">
					<constructor-arg>
						<value>${memcached.server4.host}</value>
					</constructor-arg>
					<constructor-arg>
						<value>${memcached.server4.port}</value>
					</constructor-arg>
				</bean>
			</list>
		</constructor-arg>
		<constructor-arg>
			<list>
				<value>${memcached.server1.weight}</value>
				<value>${memcached.server2.weight}</value>
				<value>${memcached.server3.weight}</value>
				<value>${memcached.server4.weight}</value>
			</list>
		</constructor-arg>
		<property name="commandFactory">
			<bean class="net.rubyeye.xmemcached.command.TextCommandFactory" />
		</property>
		<property name="sessionLocator">
			<bean class="net.rubyeye.xmemcached.impl.KetamaMemcachedSessionLocator" />
		</property>
		<property name="transcoder">
			<bean class="net.rubyeye.xmemcached.transcoders.SerializingTranscoder" />
		</property>
	</bean>
	<!-- Use factory bean to build memcached client -->
	<bean
		id="memcachedClient"
		factory-bean="memcachedClientBuilder"
		factory-method="build"
		destroy-method="shutdown" />
</beans>


这里的memcachedClientBuilder节点完成MemcachedClientBuilder，然后通过memcachedClient节点配置factory-method，调用MemcachedClientBuilder的build()方法产生MemcachedClient，并配置destroy-method进行关闭。
不过我还是疑惑，这里的异常由谁来处理？Spring容器吗？ 或者需要另一个代理Bean包装一下？

有了Spring容器支持，我们不需要在代码中进行配置，也不需要重复调用build()跟shutdown()方法，这些操作交给Spring来完成。
代码如下：
Java代码 复制代码 收藏代码
  1. import static junit.framework.Assert.*;
  3. import java.util.concurrent.TimeoutException;
  5. import net.rubyeye.xmemcached.MemcachedClient;
  6. import net.rubyeye.xmemcached.exception.MemcachedException;
  8. import org.junit.Before;
  9. import org.junit.Test;
  10. import org.springframework.context.ApplicationContext;
  11. import org.springframework.context.support.ClassPathXmlApplicationContext;
  13. public class MemcachedSpringTest {
  15. private ApplicationContext app;
  16. private MemcachedClient memcachedClient;
  18. @Before
  19. public void init() {
  20. app = new ClassPathXmlApplicationContext("applicationContext.xml");
  21. memcachedClient = (MemcachedClient) app.getBean("memcachedClient");
  22. }
  24. @Test
  25. public void test() {
  26. try {
  27. // 设置/获取
  28. memcachedClient.set("zlex", 36000, "set/get");
  29. assertEquals("set/get", memcachedClient.get("zlex"));
  31. // 替换
  32. memcachedClient.replace("zlex", 36000, "replace");
  33. assertEquals("replace", memcachedClient.get("zlex"));
  35. // 移除
  36. memcachedClient.delete("zlex");
  37. assertNull(memcachedClient.get("zlex"));
  38. } catch (TimeoutException e) {
  39. // TODO Auto-generated catch block
  40. e.printStackTrace();
  41. } catch (InterruptedException e) {
  42. // TODO Auto-generated catch block
  43. e.printStackTrace();
  44. } catch (MemcachedException e) {
  45. // TODO Auto-generated catch block
  46. e.printStackTrace();
  47. }
  48. }
  49. } 
import static junit.framework.Assert.*;

import java.util.concurrent.TimeoutException;

import net.rubyeye.xmemcached.MemcachedClient;
import net.rubyeye.xmemcached.exception.MemcachedException;

import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MemcachedSpringTest {

	private ApplicationContext app;
	private MemcachedClient memcachedClient;

	@Before
	public void init() {
		app = new ClassPathXmlApplicationContext("applicationContext.xml");
		memcachedClient = (MemcachedClient) app.getBean("memcachedClient");
	}

	@Test
	public void test() {
		try {
			// 设置/获取
			memcachedClient.set("zlex", 36000, "set/get");
			assertEquals("set/get", memcachedClient.get("zlex"));

			// 替换
			memcachedClient.replace("zlex", 36000, "replace");
			assertEquals("replace", memcachedClient.get("zlex"));

			// 移除
			memcachedClient.delete("zlex");
			assertNull(memcachedClient.get("zlex"));
		} catch (TimeoutException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MemcachedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}


相关链接：
Memcached笔记——（一）安装&常规错误&监控
Memcached笔记——（二）XMemcached&Spring集成
Memcached笔记——（三）Memcached使用总结
Memcached笔记——（四）应对高并发攻击
posted @ 2013-10-29 09:24  yangkai_keven  阅读(317)  评论(0)  编辑  收藏  举报