准备工作：连接两个redis
cd /usr/local/bin
redis-server hconfig/redis.conf
redise-cli -p 6379

客户端订阅名为 channal1的频道
SUBSCRIBE channal1
Reading messages... (press Ctrl-C to quit)

1. "subscribe"
2. "channal1"
3. (integer) 1

服务端向channel1发送 hello
publish channal1 hello

客户端订阅名为 channal1的频道 接收到 hello
127.0.0.1:6379> SUBSCRIBE channal1
Reading messages... (press Ctrl-C to quit)

1. "subscribe"
2. "channal1"
3. (integer) 1
4. "message"
5. "channal1"
6. "hello"