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# Redis Publish/Subscribe Redis Publish/Subscribe (pub/sub) is a messaging pattern where publishers (pub) send messages and subscribers (sub) receive them. Redis clients can subscribe to any number of channels. The figure below illustrates the relationship among channel `channel1` and three clients subscribed to it — `client2`, `client5`, and `client1`: !(#) When a new message is sent to channel `channel1` via the `PUBLISH` command, the message is delivered to all three subscribers: !(#) * * * ## Example The following example demonstrates how publish/subscribe works. You need to start two `redis-cli` clients. In our example, we create a subscription channel named **tutorialChat**: ## First redis-cli client redis 127.0.0.1:6379> SUBSCRIBE tutorialChat Reading messages... (press Ctrl-C to quit) 1)"subscribe" 2)"tutorialChat" 3)(integer)1 Now, let's open another redis client and publish two messages to the same channel `tutorialChat`; the subscriber will receive both messages. ## Second redis-cli client redis 127.0.0.1:6379> PUBLISH tutorialChat "Redis PUBLISH test" (integer) 1 redis 127.0.0.1:6379> PUBLISH tutorialChat "Learn redis by .com" (integer) 1 # The subscriber's client will display the following messages 1) "message" 2) "tutorialChat" 3) "Redis PUBLISH test" 1) "message" 2) "tutorialChat" 3) "Learn redis by .com" GIF demonstration as follows: * Start your local Redis server and launch two `redis-cli` clients. * In the **first redis-cli client**, enter `SUBSCRIBE tutorialChat`, meaning to subscribe to the `tutorialChat` channel. * In the **second redis-cli**