干货--Redis池化联接和搭建分布式集群

首先看一下思维导图

入门可以参看我上篇文章Redis 30分钟快速入门

本文主要内容
1: 联接远程redis服务器
2: 使用MyProperties池化联接
3: 使用ResourceBundle读取配置文件，池化联接
4: 如何释放联接 pool.returnResourceObject(jedis);
5: 集群的配置和使用
6.简单整合Spring

1: 联接远程redis服务器

import redis.clients.jedis.Jedis;

public class Test1 {


    public static void main(String[] args) {
        // 连接本地的 Redis 服务
        Jedis jedis = new Jedis("169.254.173.100");
        System.out.println("Connection to server sucessfully");
        // 查看服务是否运行
        System.out.println("Server is running: " + jedis.ping());
        String keys = "name";
        jedis.del(keys);
        String vaule = jedis.set(keys, "tanggao");
        System.out.println(vaule);
    }

}

2: 使用MyProperties池化联接
首先在根目录下穿点一个redis.properties的资源文件

redis.pool.maxActive=1024
redis.pool.maxIdle=200
redis.pool.maxWait=1000
redis.pool.testOnBorrow=true
redis.pool.testOnReturn=true
redis.ip=169.254.173.100
redis.port=6379

再写一个Myproperties 类

package com.yc.beans2;

import java.io.IOException;
import java.util.Properties;

public class Myproperties extends Properties {

    private static Myproperties mp;


    private Myproperties(){
        try {
            this.load(Myproperties.class.getClassLoader().getResourceAsStream("redis.properties"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static Myproperties getInstance(){
        if(mp==null){
            mp=new Myproperties();
        }
        return mp;
    }

}

最后池化连接

package com.yc.beans2;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class Test1 {

    private static JedisPool pool; 
    static {  

        JedisPoolConfig config = new JedisPoolConfig(); 
        config.setMaxTotal(Integer.valueOf(Myproperties.getInstance().getProperty("redis.pool.maxActive"))); 
        config.setMaxIdle(Integer.valueOf(Myproperties.getInstance().getProperty("redis.pool.maxIdle"))); 
        config.setMaxWaitMillis(Long.valueOf(Myproperties.getInstance().getProperty("redis.pool.maxWait"))); 
        config.setTestOnBorrow(Boolean.valueOf(Myproperties.getInstance().getProperty("redis.pool.testOnBorrow"))); 
        config.setTestOnReturn(Boolean.valueOf(Myproperties.getInstance().getProperty("redis.pool.testOnReturn"))); 
        pool = new JedisPool(config, Myproperties.getInstance().getProperty("redis.ip"),Integer.valueOf(Myproperties.getInstance().getProperty("redis.port"))); 
    }  

    public static void main(String[] args) {
        //连接本地的 Redis 服务
      //  Jedis jedis = new Jedis("169.254.173.100");
        Jedis jedis = pool.getResource();
       String keys="name";
       jedis.del(keys);
     String vaule=  jedis.set(keys, "tanggao");
     System.out.println(vaule);
    }

}

3: 使用ResourceBundle读取配置文件，池化联接
也可以用java.util.ResourceBundle读取，这样就不需要Myproperties了

package com.yc.beans3;

import java.util.ResourceBundle;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class Test1 {


    private static JedisPool pool; 
    static {  
        ResourceBundle bundle = ResourceBundle.getBundle("redis"); 
        if (bundle == null) {  
            throw new IllegalArgumentException(  
                    "[redis.properties] is not found!"); 
        }  
        JedisPoolConfig config = new JedisPoolConfig(); 
        config.setMaxTotal(Integer.valueOf(bundle  
                .getString("redis.pool.maxActive"))); 
        config.setMaxIdle(Integer.valueOf(bundle  
                .getString("redis.pool.maxIdle"))); 
        config.setMaxWaitMillis(Long.valueOf(bundle.getString("redis.pool.maxWait"))); 
        config.setTestOnBorrow(Boolean.valueOf(bundle  
                .getString("redis.pool.testOnBorrow"))); 
        config.setTestOnReturn(Boolean.valueOf(bundle  
                .getString("redis.pool.testOnReturn"))); 
        pool = new JedisPool(config, bundle.getString("redis.ip"),  
                Integer.valueOf(bundle.getString("redis.port"))); 
    }  

    public static void main(String[] args) {
        //连接本地的 Redis 服务
      //  Jedis jedis = new Jedis("169.254.173.100");
        Jedis jedis = pool.getResource();
        System.out.println("Connection to server sucessfully");
        //查看服务是否运行
       System.out.println("Server is running: "+jedis.ping());
       String keys="name";
       jedis.del(keys);
     String vaule=  jedis.set(keys, "tanggao");
     System.out.println(vaule);
    }

}

4: 如何释放联接 pool.returnResourceObject(jedis);

package com.yc.beans4;

import java.util.LinkedList;
import java.util.List;
import java.util.ResourceBundle;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.JedisShardInfo;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;

public class Test1 {

    private static JedisPool pool;

    static {
        ResourceBundle bundle = ResourceBundle.getBundle("redis");
        if (bundle == null) {
            throw new IllegalArgumentException("[redis.properties] is not found!");
        }
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(Integer.valueOf(bundle.getString("redis.pool.maxActive")));
        config.setMaxIdle(Integer.valueOf(bundle.getString("redis.pool.maxIdle")));
        config.setMaxWaitMillis(Long.valueOf(bundle.getString("redis.pool.maxWait")));
        config.setTestOnBorrow(Boolean.valueOf(bundle.getString("redis.pool.testOnBorrow")));
        config.setTestOnReturn(Boolean.valueOf(bundle.getString("redis.pool.testOnReturn")));
        pool = new JedisPool(config, bundle.getString("redis.ip"), Integer.valueOf(bundle.getString("redis.port")));
    }

    public static void main(String[] args) {
        // 连接本地的 Redis 服务
        // Jedis jedis = new Jedis("169.254.173.100");
        Jedis jedis = pool.getResource();
        System.out.println("Connection to server sucessfully");
        // 查看服务是否运行
        System.out.println("Server is running: " + jedis.ping());
        String keys = "name";
        jedis.del(keys);
        String vaule = jedis.set(keys, "tanggao");
        System.out.println(vaule);
        pool.returnResourceObject(jedis);
    }

}

5.集群的配置和使用
在配置文件里多加几个ip和端口

package com.yc.beans5;

import java.util.LinkedList;
import java.util.List;
import java.util.ResourceBundle;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.JedisShardInfo;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;

public class Test1 {

    private static ShardedJedisPool  pool;

    static {
        ResourceBundle bundle = ResourceBundle.getBundle("redis");
        if (bundle == null) {
            throw new IllegalArgumentException("[redis.properties] is not found!");
        }
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(Integer.valueOf(bundle.getString("redis.pool.maxActive")));
        config.setMaxIdle(Integer.valueOf(bundle.getString("redis.pool.maxIdle")));
        config.setMaxWaitMillis(Long.valueOf(bundle.getString("redis.pool.maxWait")));
        config.setTestOnBorrow(Boolean.valueOf(bundle.getString("redis.pool.testOnBorrow")));
        config.setTestOnReturn(Boolean.valueOf(bundle.getString("redis.pool.testOnReturn")));

        JedisShardInfo jedisShardInfo1 = new JedisShardInfo(bundle.getString("redis.ip"),
                Integer.valueOf(bundle.getString("redis.port")));
        // JedisShardInfo jedisShardInfo2 = new JedisShardInfo(
        // bundle.getString("redis2.ip"),Integer.valueOf(bundle.getString("redis.port")));

        List<JedisShardInfo> list = new LinkedList<JedisShardInfo>();
        list.add(jedisShardInfo1);
        // list.add(jedisShardInfo2);
        // pool = new JedisPool(config, bundle.getString("redis.ip"),Integer.valueOf(bundle.getString("redis.port")));
        pool = new ShardedJedisPool(config, list); 
    }

    public static void main(String[] args) {
        // 连接本地的 Redis 服务
        // Jedis jedis = new Jedis("169.254.173.100");
        ShardedJedis jedis = pool.getResource();
        String keys = "name";
        jedis.del(keys);
        String vaule = jedis.set(keys, "tanggao");
        System.out.println(vaule);

        pool.returnResourceObject(jedis);
    }

}

6.最后还可以整合Spring
加入配置文件

<?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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" 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://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 启用注解解析器 -->
    <context:annotation-config />
    <!-- 因为采用了混合解析方式( 有一部分配置在xml中,有一部分在java类中，所以要让spring的注解解析器去扫描包 -->
    <context:component-scan base-package="com.*" />


    <context:property-placeholder location="classpath:redis.properties" />
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="${redis.pool.maxActive}" />
        <property name="maxIdle" value="${redis.pool.maxIdle}" />
        <property name="maxWaitMillis" value="${redis.pool.maxWait}" />
        <property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
    </bean>
    <bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool">
        <constructor-arg index="0" ref="jedisPoolConfig" />
        <constructor-arg index="1">
            <list>
                <bean class="redis.clients.jedis.JedisShardInfo">
                    <constructor-arg index="0" value="${redis.ip}" />
                    <constructor-arg index="1" value="${redis.port}" type="int" />
                </bean>
                <!-- <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg index="0" value="${redis2.ip}" /> <constructor-arg index="1" value="${redis.port}" type="int" /> </bean> -->
            </list>
        </constructor-arg>
    </bean>
</beans>

package com.yc.beans6;

import static org.junit.Assert.*;

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

import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;

public class TestSpring {
    private ApplicationContext app;  
    private ShardedJedisPool pool;  

    @Before  
    public void before() throws Exception {  
        app = new ClassPathXmlApplicationContext("applicationContext.xml");  
        pool = (ShardedJedisPool) app.getBean("shardedJedisPool");  
    }  

    @Test  
    public void test() {  

        // 从池中获取一个Jedis对象 
        ShardedJedis jedis = pool.getResource();  
        String keys = "name1";  
        String value = "tang";  
        // 删数据 
        jedis.del(keys);  
        // 存数据 
        jedis.set(keys, value);  
        // 取数据 
        String v = jedis.get(keys);  

        System.out.println(v);  

        // 释放对象池 
        pool.returnResource(jedis);  

        assertEquals(value, v);  
    }  
}