在Redis集群中使用pipeline批量插入的实现方法

String key = "key";
Jedis jedis = new Jedis("xx.xx.xx.xx");
Pipeline p = jedis.pipelined();
List<String> myData = .... //要插入的数据列表
for(String data: myData){
  p.hset(key, data);
}
p.sync();
jedis.close();

//初始化得到了jedis cluster, 如何获取HostAndPort集合代码就不写了

Set<HostAndPort> nodes = .....

JedisCluster jedisCluster = new JedisCluster(nodes);



Map<String, JedisPool> nodeMap = jedisCluster.getClusterNodes();

String anyHost = nodeMap.keySet().iterator().next();

//getSlotHostMap方法在下面有

TreeMap<Long, String> slotHostMap = getSlotHostMap(anyHost); 

  private static TreeMap<Long, String> getSlotHostMap(String anyHostAndPortStr) {
    TreeMap<Long, String> tree = new TreeMap<Long, String>();
    String parts[] = anyHostAndPortStr.split(":");
    HostAndPort anyHostAndPort = new HostAndPort(parts[0], Integer.parseInt(parts[1]));
    try{
      Jedis jedis = new Jedis(anyHostAndPort.getHost(), anyHostAndPort.getPort());
      List<Object> list = jedis.clusterSlots();
      for (Object object : list) {
        List<Object> list1 = (List<Object>) object;
        List<Object> master = (List<Object>) list1.get(2);
        String hostAndPort = new String((byte[]) master.get(0)) + ":" + master.get(1);
        tree.put((Long) list1.get(0), hostAndPort);
        tree.put((Long) list1.get(1), hostAndPort);
      }
      jedis.close();
    }catch(Exception e){
      
    }
    return tree;
  }

//获取槽号

int slot = JedisClusterCRC16.getSlot(key); 

//获取到对应的Jedis对象

Map.Entry<Long, String> entry = slotHostMap.lowerEntry(Long.valueOf(slot));

Jedis jedis = nodeMap.get(entry.getValue()).getResource();