Redis-分布式

package test.jedis;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisSentinelPool;

/**
 * 分布式redis 操作
 * 没有多台机器,在同一台机器上多个redis 实例来模拟多台机器测试
 *
 * */
public class SentinelPoolTest {

	@Test
    public void testJedis() throws InterruptedException {

        Set<String> sentinels = new HashSet<String>();
        sentinels.add("127.0.0.1:6377");
        sentinels.add("127.0.0.1:6378");
        sentinels.add("127.0.0.1:6379");

        JedisSentinelPool sentinelPool = new JedisSentinelPool("master_test",sentinels);

        Jedis jedis = sentinelPool.getResource();

        System.out.println("current Host:" + sentinelPool.getCurrentHostMaster());

        String key = "current key";

        String cacheData = jedis.get(key);

        if (cacheData == null) {
            jedis.del(key);
        }

        jedis.set(key, "write data");// 写入

        System.out.println(jedis.get(key));// 读取

        System.out.println("current Host:"  + sentinelPool.getCurrentHostMaster());// down掉master，观察slave是否被提升为master

        jedis.set(key, "bbb");// 测试新master的写入

        System.out.println(jedis.get(key));// 观察读取是否正常

        sentinelPool.returnResource(jedis);
        jedis.disconnect();

    }

}