redis初级

当前redis版本(2.4.8)并不支持集群,但是jedis通过内置路由树的模式,对redis进行了简单的sharding,此时池内每个连接对象对应多个redis实例连接,示例代码如下:

package com.suning.framework.sample.jedis.shardedpool;

 

import java.util.ArrayList;

 

import redis.clients.jedis.JedisPoolConfig;

import redis.clients.jedis.JedisShardInfo;

import redis.clients.jedis.ShardedJedis;

import redis.clients.jedis.ShardedJedisPool;

 

/**

 *

 * 功能描述： jedis中的ShardedJedisPool为ShardeJedis的池实现

 * 每个ShardedJedis中内置了路由树,可针对多个Redis实例进行路由

 *

 */

 

public class ShardedJedisPoolTester {

    public static void main(String[] args) {

        // 配置jedis连接池的基本属性

        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();

        jedisPoolConfig.setMaxActive(50);//设置最大连接数

        jedisPoolConfig.setMaxIdle(10);//设置池中最大空闲连接数

        jedisPoolConfig.setMaxWait(2000);//设置获取连接最大等待时长

        jedisPoolConfig.setTestOnBorrow(true);//设置获取连接前是否进行连接测试

        //配置sharding服务器信息

        ArrayList<JedisShardInfo> shardInfoList = new ArrayList<JedisShardInfo>();

        shardInfoList.add( new JedisShardInfo("localhost",6379,"server_6379"));

        shardInfoList.add( new JedisShardInfo("localhost",6380,"server_6380"));

        //根据连接池基本配置信息及sharding服务器信息列表,生成切片连接池

        ShardedJedisPool jedisPool = new ShardedJedisPool(jedisPoolConfig, shardInfoList);

        ShardedJedis jedis = null;

        try {

            // 从连接池中获取连接

            jedis = jedisPool.getResource();

            // 执行redis操作

            jedis.set("name", "xiexu");

            // 执行redis操作

            String value = jedis.get("name");

            System.out.println(value);

        } catch (Exception ex) {

        } finally {

            // 释放jedis连接,而非断开连接

            jedisPool.returnResource(jedis);}
}}