java使用Redis5--分布式存储

Redis实现分布式存储的方法主要是采用一致性哈稀分片（Shard），将不同的key分配到不同的redis server上，达到横向扩展的目的。

 

package redis;

import java.util.ArrayList;
import java.util.List;

import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.JedisShardInfo;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;
import redis.clients.util.Hashing;
import redis.clients.util.Sharded;

public class RedisShardPoolTest {

    static ShardedJedisPool pool;

    static {
        JedisPoolConfig config = new JedisPoolConfig();// Jedis池配置
        config.setMaxTotal(500);// 最大活动的对象个数
        config.setMaxIdle(1000 * 60);// 对象最大空闲时间
        config.setMaxWaitMillis(1000 * 10);// 获取对象时最大等待时间
        config.setTestOnBorrow(true);
        String hostA = "192.168.77.135";
        int portA = 6378;
        String hostB = "192.168.77.135";
        int portB = 6380;
        List<JedisShardInfo> jdsInfoList = new ArrayList<JedisShardInfo>(2);
        JedisShardInfo infoA = new JedisShardInfo(hostA, portA);
        // infoA.setPassword("redis.360buy");
        JedisShardInfo infoB = new JedisShardInfo(hostB, portB);
        // infoB.setPassword("redis.360buy");
        jdsInfoList.add(infoA);
        jdsInfoList.add(infoB);
        pool = new ShardedJedisPool(config, jdsInfoList, Hashing.MURMUR_HASH, Sharded.DEFAULT_KEY_TAG_PATTERN);
    }

    /**
     * 
     * @param args
     */

    public static void main(String[] args) {
        ShardedJedis jds = null;
        // key += "{aaa}";
        try {
            jds = pool.getResource();
            for (int i = 0; i < 100; i++) {
                String key = generateKey();
                System.out.println(key + ":" + jds.getShard(key).getClient().getHost() + ":" + jds.getShard(key).getClient().getPort());
                System.out.println(jds.set(key, "1111111111111111111111111111111"));
                System.out.println(jds.get(key));
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            pool.returnResource(jds);
        }
    }

    private static int index = 1;

    public static String generateKey() {
        return String.valueOf(Thread.currentThread().getId()) + "_" + (index++);
    }
}