【README】
本文旨在记录 jedis 包连接redis集群的开发方式，并对api做简单测试，api不会深入；
maven引入的 jedis依赖
<dependencies><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>3.0.0</version></dependency></dependencies>【1】 java redis 客户端
/*** redis集群客户端 * @author pacoson*/
public class RedisClusterClient {private static JedisCluster jedis = null;//可用连接实例的最大数目，默认为8；//如果赋值为-1，则表示不限制，如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)private static Integer MAX_TOTAL = 1024;//控制一个pool最多有多少个状态为idle(空闲)的jedis实例，默认值是8private static Integer MAX_IDLE = 200;//等待可用连接的最大时间，单位是毫秒，默认值为-1，表示永不超时。//如果超过等待时间，则直接抛出JedisConnectionExceptionprivate static Integer MAX_WAIT_MILLIS = 10000;//在borrow(用)一个jedis实例时，是否提前进行validate(验证)操作；//如果为true，则得到的jedis实例均是可用的private static Boolean TEST_ON_BORROW = true;//在空闲时检查有效性, 默认falseprivate static Boolean TEST_WHILE_IDLE = true;//是否进行有效性检查private static Boolean TEST_ON_RETURN = true;private RedisClusterClient(){}/*** 静态块，初始化Redis连接池*/static {try {JedisPoolConfig config = new JedisPoolConfig();/*注意：在高版本的jedis jar包，比如本版本2.9.0，JedisPoolConfig没有setMaxActive和setMaxWait属性了这是因为高版本中官方废弃了此方法，用以下两个属性替换。maxActive ==> maxTotalmaxWait==> maxWaitMillis*/config.setMaxTotal(MAX_TOTAL);config.setMaxIdle(MAX_IDLE);config.setMaxWaitMillis(MAX_WAIT_MILLIS);config.setTestOnBorrow(TEST_ON_BORROW);config.setTestWhileIdle(TEST_WHILE_IDLE);config.setTestOnReturn(TEST_ON_RETURN);/* redis节点集合 */Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();jedisClusterNode.add(new HostAndPort("192.168.163.201", 6379));jedisClusterNode.add(new HostAndPort("192.168.163.201", 6380));jedisClusterNode.add(new HostAndPort("192.168.163.201", 6381));jedisClusterNode.add(new HostAndPort("192.168.163.202", 6379));jedisClusterNode.add(new HostAndPort("192.168.163.202", 6380));jedisClusterNode.add(new HostAndPort("192.168.163.202", 6381));jedisClusterNode.add(new HostAndPort("192.168.163.203", 6379));jedisClusterNode.add(new HostAndPort("192.168.163.203", 6380));jedisClusterNode.add(new HostAndPort("192.168.163.203", 6381));jedis = new JedisCluster(jedisClusterNode,1000,1000,5,config);} catch (Exception e) {e.printStackTrace();}}public final static JedisCluster getJedis(){return jedis;}
}
【2】测试用例
/*** jedis测试用例 */
public class RedisClusterApiTest {public static void main(String[] args) {/* 获取redis集群客户端 */ JedisCluster jedisClient = RedisClusterClient.getJedis(); jedisClient.set("cluster","hello world");System.out.println(jedisClient.get("cluster"));// hello world }
}
【3】centos登录redis集群，通过命令行查看 cluster key的值；
[root@centos201 ~]# /usr/local/redis-cluster/bin/redis-cli -c -h 192.168.163.201 -p 6381
192.168.163.201:6381> get cluster
-> Redirected to slot [14041] located at 192.168.163.203:6379
"hello world"
)
