# 第二阶段模块一

**Repository Path**: old_he/stage-2-module-1

## Basic Information

- **Project Name**: 第二阶段模块一
- **Description**: No description available
- **Primary Language**: Java
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-12-19
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 第二阶段模块一



#### 步骤
1. 集群搭建步骤就是讲义中的步骤。  
2. 扩容主要是下面三条命令：  
./redis-cli --cluster add-node 192.168.80.122:7007 192.168.80.122:7001
./redis-cli --cluster reshard 127.0.0.1:7007
./redis-cli --cluster add-node 192.168.80.122:7008 192.168.80.122:7007 --cluster-slave --cluster-master-id 0335d83d215deb38f537b95760e0a08031xxxxxx
3. JedisCluster的使用也比较简单  

``` java
public class RedisDemo {
    JedisCluster jedisCluster;

    public RedisDemo(){
        Set<HostAndPort> set = new HashSet<>();
        set.add(new HostAndPort("192.168.80.122",7001));
        set.add(new HostAndPort("192.168.80.122",7002));
        set.add(new HostAndPort("192.168.80.122",7003));
        set.add(new HostAndPort("192.168.80.122",7004));
        set.add(new HostAndPort("192.168.80.122",7005));
        set.add(new HostAndPort("192.168.80.122",7006));
        set.add(new HostAndPort("192.168.80.122",7007));
        set.add(new HostAndPort("192.168.80.122",7008));
        this.jedisCluster = new JedisCluster(set);
    }

    public void get(String key){
        System.out.println(jedisCluster.get(key));
    }

    public void set(String key, String value){
        System.out.println(jedisCluster.set(key, value));
    }


    public static void main(String[] args) {
        RedisDemo demo = new RedisDemo();
        demo.get("name1");
        demo.set("name1", "ccc");
        demo.get("name1");
    }
}
```