node-redis/examples/psubscribe.js

'use strict';

var redis = require('redis');
var client1 = redis.createClient();
var client2 = redis.createClient();
var client3 = redis.createClient();
var client4 = redis.createClient();
var msg_count = 0;

client1.on('psubscribe', function (pattern, count) {
    console.log('client1 psubscribed to ' + pattern + ', ' + count + ' total subscriptions');
    client2.publish('channeltwo', 'Me!');
    client3.publish('channelthree', 'Me too!');
    client4.publish('channelfour', 'And me too!');
});

client1.on('punsubscribe', function (pattern, count) {
    console.log('client1 punsubscribed from ' + pattern + ', ' + count + ' total subscriptions');
    client4.end();
    client3.end();
    client2.end();
    client1.end();
});

client1.on('pmessage', function (pattern, channel, message) {
    console.log('(' + pattern + ') client1 received message on ' + channel + ': ' + message);
    msg_count += 1;
    if (msg_count === 3) {
        client1.punsubscribe();
    }
});

client1.psubscribe('channel*');