redis知识

布满荆棘的人生 2022-07-16 11:38 177阅读 0赞

Redis的Java客户端使用的是Jedis

# 相关网博客和网站 #

1.  redis入门学习网站（菜鸟教程）  
    [地址][Link 1]：[http://www.runoob.com/redis/redis-tutorial.html][Link 1]
2.  Redis的Java客户端Jedis的八种调用方式(事务、管道、分布式)介绍  
    [地址][Link 2]：[https://my.oschina.net/sphl520/blog/312514][Link 2]
3.  一致性哈希算法原理了解：  
    [地址][Link 3]：[http://blog.csdn.net/sparkliang/article/details/5279393][Link 3]

# Java 使用 Redis #

详情参见：[http://www.runoob.com/redis/redis-java.html][http_www.runoob.com_redis_redis-java.html]

import redis.clients.jedis.Jedis;
    public class RedisListJava {
       public static void main(String[] args) {
          //连接本地的 Redis 服务
          Jedis jedis = new Jedis("localhost");
          System.out.println("Connection to server sucessfully");
          //存储数据到列表中
          jedis.lpush("tutorial-list", "Redis");
          jedis.lpush("tutorial-list", "Mongodb");
          jedis.lpush("tutorial-list", "Mysql");
         // 获取存储的数据并输出
         List<String> list = jedis.lrange("tutorial-list", 0 ,5);
         for(int i=0; i<list.size(); i++) {
           System.out.println("Stored string in redis:: "+list.get(i));
         }
     }
    }

# ShardedJedisPool的使用 #

1 package com.test;
     2 
     3 import java.util.ArrayList;
     4 import java.util.List;
     5 
     6 import redis.clients.jedis.JedisPoolConfig;
     7 import redis.clients.jedis.JedisShardInfo;
     8 import redis.clients.jedis.ShardedJedis;
     9 import redis.clients.jedis.ShardedJedisPool;
    10 
    11 public class RedisShardPoolTest { 
    12     
    13     static ShardedJedisPool pool;
    14 
    15     static{
    16         JedisPoolConfig config =new JedisPoolConfig();//Jedis池配置
    17         config.setMaxActive(500);//最大活动的对象个数
    18         config.setMaxIdle(1000 * 60);//对象最大空闲时间
    19         config.setMaxWait(1000 * 10);//获取对象时最大等待时间
    20         config.setTestOnBorrow(true);
    21         String hostA = "192.168.0.100";
    22         int portA = 6379;
    23         String hostB = "192.168.0.115";
    24         int portB = 6379;
    25         List<JedisShardInfo> jdsInfoList =new ArrayList<JedisShardInfo>(2);
    26         JedisShardInfo infoA = new JedisShardInfo(hostA, portA);
    27         infoA.setPassword("admin");
    28         JedisShardInfo infoB = new JedisShardInfo(hostB, portB);
    29         infoB.setPassword("admin");
    30         jdsInfoList.add(infoA);
    31         jdsInfoList.add(infoB);
    32         pool =new ShardedJedisPool(config, jdsInfoList);
    33      }
    34 
    35        
    36 
    37     /** 38 39 * @param args 40 41 */
    42     
    43     public static void main(String[] args) {
    44         for(int i=0; i<100; i++){
    45             String key = generateKey();
    46             ShardedJedis jds = null;
    47             try {
    48                 jds = pool.getResource();
    49                 System.out.println(key+":"+jds.getShard(key).getClient().getHost());
    50                 System.out.println(jds.set(key,Math.random()+""));
    51             } catch (Exception e) {
    52                 e.printStackTrace();
    53             } finally {
    54                 pool.returnResource(jds);
    55             }
    56         }
    57     }
    58     
    59     private static int index = 1;
    60     public static String generateKey(){
    61         return String.valueOf(Thread.currentThread().getId())+"_"+(index++);
    62     }
    63 }

[Link 1]: http://www.runoob.com/redis/redis-tutorial.html
[Link 2]: https://my.oschina.net/sphl520/blog/312514
[Link 3]: http://blog.csdn.net/sparkliang/article/details/5279393
[http_www.runoob.com_redis_redis-java.html]: http://www.runoob.com/redis/redis-java.html