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Redis publish subscription

When new news passes PUBLISH Command to channel channel1 when , This message will be sent to the three clients who subscribe to it ：

1. The following example demonstrates how a publish subscription works . In our example, we created a subscription channel named redisChat:

2. Now? , Let's turn on a new one redis client , And then on the same channel redisChat Two news releases , Subscribers can receive messages

Subscriber receives message

Serial number	Command and description
1	PSUBSCRIBE pattern [pattern ...] Subscribe to one or more channels that match the given pattern .
2	PUBSUB subcommand [argument [argument ...]] View subscription and publishing system status .
3	PUBLISH channel message Send the message to the specified channel .
4	PUNSUBSCRIBE [pattern [pattern ...]] Unsubscribe all channels in the given mode .
5	SUBSCRIBE channel [channel ...] Subscribe to information for a given channel or channels .
6	UNSUBSCRIBE [channel [channel ...]] To unsubscribe from a given channel .

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