Redis Publish/subscribe
Redis implements a publish/subscribe messaging mechanism.
Its concept is simple: a publisher sends a message on a channel. Multiple subscribers receive it.
Subscribe to a channel using
SUBSCRIBE <channel>
Publish to a channel using
PUBLISH <channel> <message>
Example:
SUBSCRIBE dogs
In another redis-cli window, type:
PUBLISH dogs "Roger"
Messages will be sent to the subscribers, and they’ll by default display the kind of event, the channel, and the message:
Subscribers can listen on multiple channels:
SUBSCRIBE dogs cats
and will receive messages coming from all of them.
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