Java代码操作Redis的sentinel和Redis的集群Cluster操作

2023-03-18 10:59:52

Jedis操作Redis的sentinel示例代码:

总共四台机器,crxy99,crxy98分别是主节点和从节点. crxy97和crxy96是两个监控此主从架构的sentinel节点.

上代码:

 import org.junit.Test;

 import redis.clients.jedis.HostAndPort;

 import redis.clients.jedis.Jedis;

 import redis.clients.jedis.JedisPoolConfig;

 import redis.clients.jedis.JedisSentinelPool;

 public class TestSentinel {

     @Test

     public void test1() {

         JedisPoolConfig poolConfig = new JedisPoolConfig();

         String masterName = "mymaster";

         Set<String> sentinels = new HashSet<String>();

         sentinels.add("192.168.1.97:26379");

         sentinels.add("192.168.1.96:26379");

         JedisSentinelPool jedisSentinelPool = new JedisSentinelPool(masterName, sentinels, poolConfig);

         HostAndPort currentHostMaster = jedisSentinelPool.getCurrentHostMaster();

         System.out.println(currentHostMaster.getHost()+"--"+currentHostMaster.getPort());//获取主节点的信息

         Jedis resource = jedisSentinelPool.getResource();

         String value = resource.get("a");

         System.out.println(value);//获得键a对应的value值

         resource.close();

     }

 }

运行结果入下:

192.168.1.99--6379

1

Jedis操作集群示例代码:

模拟的集群环境.在一台机器上启动多个redis..每个redis对应的是不同端口.

在crxy99 192.168.1.99上启动的....总共3主3从端口号对应的的是7000~7005.....

看代码:

 import java.util.HashSet;

 import java.util.Set;

 import org.junit.Test;

 import redis.clients.jedis.HostAndPort;

 import redis.clients.jedis.JedisCluster;

 import redis.clients.jedis.JedisPoolConfig;

 public class TestCluster {

     @Test

     public void test1() throws Exception {

         JedisPoolConfig poolConfig = new JedisPoolConfig();

         Set<HostAndPort> nodes = new HashSet<HostAndPort>();

         HostAndPort hostAndPort = new HostAndPort("192.168.1.99", 7000);

         HostAndPort hostAndPort1 = new HostAndPort("192.168.1.99", 7001);

         HostAndPort hostAndPort2 = new HostAndPort("192.168.1.99", 7002);

         HostAndPort hostAndPort3 = new HostAndPort("192.168.1.99", 7003);

         HostAndPort hostAndPort4 = new HostAndPort("192.168.1.99", 7004);

         HostAndPort hostAndPort5 = new HostAndPort("192.168.1.99", 7005);

         nodes.add(hostAndPort);

         nodes.add(hostAndPort1);

         nodes.add(hostAndPort2);

         nodes.add(hostAndPort3);

         nodes.add(hostAndPort4);

         nodes.add(hostAndPort5);

         JedisCluster jedisCluster = new JedisCluster(nodes, poolConfig);//JedisCluster中默认分装好了连接池.

         //redis内部会创建连接池，从连接池中获取连接使用，然后再把连接返回给连接池

         String string = jedisCluster.get("a");

         System.out.println(string);

     }

 }

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